Teacher’s Edition Grade 4 TABLE OF CONTENTS Energy and Motion Transfer of Energy MODULE PLANNER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2A MODULE PLANNER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32A THREE DIMENSIONAL LEARNING . . . . . . . . . . . . . . . . . . . . 2C THREE DIMENSIONAL LEARNING . . . . . . . . . . . . . . . . . . . 32E INSPIRING ALL STUDENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . 2E INSPIRING ALL STUDENTS . . . . . . . . . . . . . . . . . . . . . . . . . . 32G LEVELED READER STRATEGIES . . . . . . . . . . . . . . . . . . . . . . 2F LEVELED READER STRATEGIES . . . . . . . . . . . . . . . . . . . . . 32H MODULE OPENER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 MODULE OPENER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 LESSON 1 Energy and Speed . . . . . . . . . . . . . . . . . 4A LESSON 1 INQUIRY ACTIVITY INQUIRY ACTIVITY The Moving Marble . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Demonstration of Energy Transfers . . . . . . . 36 INQUIRY ACTIVITY INQUIRY ACTIVITY Mass Matters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Energy Transfer Through Matter . . . . . . . . . . 44 PERFORMANCE TASK PERFORMANCE TASK Test Toy Cars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 LESSON 2 Energy Change in Collisions . . . . . .18A Types of Energy Transfer . . . . . . . . .34A Energy Transfer Machine . . . . . . . . . . . . . . . . . . 45 LESSON 2 INQUIRY ACTIVITY Collision Variables . . . . . . . . . . . . . . . . . . . . . . . . . 20 Transfer of Energy by Electricity . . . . . . . . . . . . .48A INQUIRY ACTIVITY Simple Electricity . . . . . . . . . . . . . . . . . . . . . . . . . 50 INQUIRY ACTIVITY Newton’s Cradle . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 PERFORMANCE TASK Make It Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 PERFORMANCE TASK Protect an Egg. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 LESSON 3 MODULE WRAP-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Transfer of Energy by Light . . . . . .62A INQUIRY ACTIVITY PERFORMANCE TASK Solar Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Design a Roller Coaster . . . . . . . . . . . . . . . . . . . 30 INQUIRY ACTIVITY How Much Energy is Used? . . . . . . . . . . . . . . . . 72 PERFORMANCE TASK A Bright Idea! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 LESSON 4 Design Energy Solutions . . . . . . . . .76A INQUIRY ACTIVITY It’s Too Loud in Here! . . . . . . . . . . . . . . . . . . . . . . 78 PERFORMANCE TASK It’s Too Cold in Here! . . . . . . . . . . . . . . . . . . . . . . . 87 MODULE WRAP-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 PERFORMANCE TASK Simple Electric Generator . . . . . . . . . . . . . . . . . 90 xxxviiiTable of Contents Structures and Functions of Living Things MODULE PLANNER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92A THREE DIMENSIONAL LEARNING . . . . . . . . . . . . . . . . . . . 92E INSPIRING ALL STUDENTS . . . . . . . . . . . . . . . . . . . . . . . . . . 92G LEVELED READER STRATEGIES . . . . . . . . . . . . . . . . . . . . . 92H MODULE OPENER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 LESSON 1 LESSON 4 The Role of Animals’ Eyes . . . . . . 138A INQUIRY ACTIVITY In the Blink of an Eye . . . . . . . . . . . . . . . . . . . . . 140 PERFORMANCE TASK It’s Time to Focus . . . . . . . . . . . . . . . . . . . . . . . . . 149 MODULE WRAP-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152 PERFORMANCE TASK How are the shapes and sizes of animal eyes related to their funcitons? . . . 152 Structures and Functions of Plants . . . . . . . . . . . . . . .94A INQUIRY ACTIVITY Movement of Water in Plants . . . . . . . . . . . . . . 96 INQUIRY ACTIVITY Design an Experiment . . . . . . . . . . . . . . . . . . . . 103 PERFORMANCE TASK How Do Plants Respond to Changes in Their Environments? . . . . . . . . . 105 LESSON 2 Structures and Functions of Animals . . . . . . . . . . . 108A INQUIRY ACTIVITY Put Your Best Foot Forward . . . . . . . . . . . . . . 110 INQUIRY ACTIVITY Structures of a Snail . . . . . . . . . . . . . . . . . . . . . 117 PERFORMANCE TASK The Model is Afoot! . . . . . . . . . . . . . . . . . . . . . . . 119 LESSON 3 Information Processing in Animals . . . . . . . . . . . . . . . . . . . . . . 122A INQUIRY ACTIVITY Sense of Touch . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 INQUIRY ACTIVITY Reaction Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 PERFORMANCE TASK Comparing Senses. . . . . . . . . . . . . . . . . . . . . . . . 134 Online nline Co Content ontentt at connectED.mcgraw-hill.com cco n nectED D.mcgraw-h g hill.com m Table of Contentsxxxix TABLE OF CONTENTS Wave Patterns and Information Transfer Patterns of Earth’s Changing Features MODULE PLANNER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154A MODULE PLANNER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190A THREE DIMENSIONAL LEARNING . . . . . . . . . . . . . . . . . .154C THREE DIMENSIONAL LEARNING . . . . . . . . . . . . . . . . . .190E INSPIRING ALL STUDENTS . . . . . . . . . . . . . . . . . . . . . . . . .154E INSPIRING ALL STUDENTS . . . . . . . . . . . . . . . . . . . . . . . . 190G LEVELED READER STRATEGIES . . . . . . . . . . . . . . . . . . . .154F LEVELED READER STRATEGIES . . . . . . . . . . . . . . . . . . . 190H MODULE OPENER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154 MODULE OPENER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190 LESSON 1 How Waves Move . . . . . . . . . . . . . . . 156A LESSON 1 INQUIRY ACTIVITY What Makes Sound? . . . . . . . . . . . . . . . . . . . . . . 158 Earth’s Landforms and Features . . . . . . . . . . . . . . . . . . . 192A INQUIRY ACTIVITY Moving Earth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194 INQUIRY ACTIVITY Sound Carriers . . . . . . . . . . . . . . . . . . . . . . . . . . . 163 PERFORMANCE TASK Landforms from Another Planet. . . . . . . . . . 203 PERFORMANCE TASK Making Waves . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168 LESSON 2 LESSON 2 How Waves Transmit information. . . . . . . . . . . . . . . . . . . . . 172A Effects of Erosion . . . . . . . . . . . . . . 206A INQUIRY ACTIVITY Shake, Rattle, and Roll . . . . . . . . . . . . . . . . . . . 208 INQUIRY ACTIVITY INQUIRY ACTIVITY Using Waves to Transmit Information . . . . 174 Weathered by Vegetation . . . . . . . . . . . . . . . . 212 INQUIRY ACTIVITY PERFORMANCE TASK Morse Code Message . . . . . . . . . . . . . . . . . . . . . 181 Landslide Experiment . . . . . . . . . . . . . . . . . . . . 220 INQUIRY ACTIVITY What’s That Say? . . . . . . . . . . . . . . . . . . . . . . . . . 184 PERFORMANCE TASK LESSON 3 History of Earth’s Surface . . . . . . 222A INQUIRY ACTIVITY Pixel Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 Making an Impression . . . . . . . . . . . . . . . . . . . . 225 MODULE WRAP-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188 Fossil Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228 INQUIRY ACTIVITY PERFORMANCE TASK Let’s Communicate!. . . . . . . . . . . . . . . . . . . . . . . 188 PERFORMANCE TASK Fossil Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232 MODULE WRAP-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236 PERFORMANCE TASK Model of a Canyon . . . . . . . . . . . . . . . . . . . . . . . . 236 xlTable of Contents Natural Hazards Energy from Natural Resources MODULE PLANNER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238A MODULE PLANNER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268A THREE DIMENSIONAL LEARNING . . . . . . . . . . . . . . . . . .238C THREE DIMENSIONAL LEARNING . . . . . . . . . . . . . . . . . .268C INSPIRING ALL STUDENTS . . . . . . . . . . . . . . . . . . . . . . . . .238E INSPIRING ALL STUDENTS . . . . . . . . . . . . . . . . . . . . . . . . .268E LEVELED READER STRATEGIES . . . . . . . . . . . . . . . . . . . .238F LEVELED READER STRATEGIES . . . . . . . . . . . . . . . . . . . .268F MODULE OPENER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238 MODULE OPENER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268 LESSON 1 Earthquakes and Volcanoes . . . . 240A LESSON 1 INQUIRY ACTIVITY Modeling Earthquakes. . . . . . . . . . . . . . . . . . . . 242 INQUIRY ACTIVITY Limited Resources . . . . . . . . . . . . . . . . . . . . . . . 272 PERFORMANCE TASK Ups and Downs of Observing Volcanoes . . . . . . . . . . . . . . . . . . . . . 249 LESSON 2 Energy from Nonrenewable Resources . . . . . . . . . . . . . . . . . . . . . . 270A INQUIRY ACTIVITY Oil Spill Cleanup . . . . . . . . . . . . . . . . . . . . . . . . . . 276 PERFORMANCE TASK Tsunamis and Floods . . . . . . . . . . . 252A Energy Usage Investigation . . . . . . . . . . . . . . 281 INQUIRY ACTIVITY A Flooding River Model . . . . . . . . . . . . . . . . . . . 254 PERFORMANCE TASK Flooding River: A Solution . . . . . . . . . . . . . . . . 262 LESSON 2 Energy from Renewable Resources . . . . . . . . . . . . . . . . . . . . . . 284A INQUIRY ACTIVITY Renewable Resources . . . . . . . . . . . . . . . . . . . . 287 MODULE WRAP-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266 PERFORMANCE TASK Natural Disaster Safety . . . . . . . . . . . . . . . . . . 266 PERFORMANCE TASK Renewable Energy Campaign . . . . . . . . . . . . . 297 MODULE WRAP-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 PERFORMANCE TASK Making Wise Choices . . . . . . . . . . . . . . . . . . . . . 300 Check out the he activities inn n! every Lesson! Online Content at c connectED.mcgraw-hill.com Table of Contentsxli ENERGY AND MOTION Look for my friends and me. We will guide you through this module, th Energy and Motion. E MODULE PLANNING Module Overview In this module, students will ask questions and construct explanations about the relationship between speed and energy and about energy changes during collisions. Students will engage in scientific experiences to answer Essential Questions such as: How are energy and speed related? What happens when objects collide? HANNAH Welder SUMMARY MODULE OPENER 0.5 days LESSON 1: ENERGY AND SPEED 7 days LESSON 2: ENERGY CHANGE IN COLLISIONS 8 days MODULE WRAP-UP 0.5 day TOTAL = 16 DAYS (1 DAY = 45 MIN) 2AModuleEnergy and Motion The module opens by engaging students in the real-world phenomenon about roller coasters and how they work. Students are then introduced to Hannah, a welder, and she asks how she can use what she will learn about energy and motion to design a roller coaster. They also learn that some types of mechanical engineers work to design roller coasters. This lesson focuses on the relationship of an object’s speed to the amount of energy it has. It also highlights the automotive engineer STEM career. Students should be able to understand that the energy and speed of an object are related. The more energy the object has, the more speed it can also have. Students will perform various investigations throughout the lesson that allow them to collect evidence to explain the relationship between the speed and the energy of an object. The focus of this lesson is on the changes in energy that occur when objects collide. It also highlights the biomechanical engineer STEM career. Students should be able to understand that predictions about energy change in collisions can be tested and that collisions result in a transfer of energy. Throughout the lesson, students will ask questions and make predictions about what will happen in different collisions and reflect back to speed and energy and how each relate to collisions. This module culminates with students designing and building their own roller coaster in the Performance Project. They must apply knowledge about the relationship between speed and energy gained in Lesson 1 to create a model roller coaster that is designed to allow the cars to make it to the end of the track. They will further apply knowledge about energy transfer in collisions learned in Lesson 2 to their roller coaster and design it so that it transfers just enough energy from one marble to the next so that the second marble falls into a plastic cup, but the first does not. I will help you guide your students through Lesson 1, st Energy and Speed and Lesson 2, Ener Energy Change in Collisions. En Science and Engineering Practices Constructing Explanations and Designing Solutions Asking Questions and Defining Problems RILEY Automotive Engineer PLAN AHEAD MODULE MATERIALS The Moving Marble Have students bring in cardboard tubes from empty paper towel rolls. Mass Matters Review how to make line graphs with students. Test Toy Cars Pound the nails into each end of the wooden block. Collision Variables Gather different types of balls for students to compare and find a clear area where students can bounce the balls. Protect an Egg Gather the building materials and find a safe space where the ladder can be set up. Design a Roller Coaster Purchase enough foam pipe insulation for all groups. Have students bring in boxes and paper towel rolls from home to use as supports. • 4 books • thin, flat board • graduated cylinder • cardboard tube • meterstick • 2 wooden blocks with securely fastened nails • tape • 500-mL plastic bottle • rubber bands with screw cap • stopwatch • pan balance • marble • plastic cup • safety goggles • water • toy car • 3 different types of balls (table tennis ball, • raw egg golf ball, tennis ball) • measuring tape or meterstick • meterstick • small box • masking tape • safety goggles • variety of packing materials •garbage bag • 2 marbles • plastic cup For Professional Development resources that will help you throughout the module, cconnectED.mcgraw-hill.com go online att Online Content att cconnectED.mcgraw-hill.com ModuleEnergy and Motion 2B ENERGY AND MOTION THREE DIMENSIONAL LEARNING Three dimensional learning in science engages students through the following strands: Disciplinary Core Ideas Science and Engineering Practices Crosscutting Concepts. Prior Knowledge Grade 3 students should have covered PS2.A Forces and Motion. Students will understand the differences between balanced and unbalanced forces. They should also know that forces can be influenced by the motion of an object. Disciplinary Core Ideas PS3.A Definitions of Energy PS3.C Relationship Between Energy and Forces Science and Engineering Practices As students explore the content in this module they will use the following Science and Engineering Practices: • Asking Questions and Defining Problems • Constructing Explanations and Designing Solutions Crosscutting Concepts As students explore the content they will also use the following Crosscutting Concepts: • Energy and Matter 2CModuleEnergy and Motion These three strands support Performance Expectations, which require a student to apply a Science and Engineering Practice to content knowledge. This module, Energy and Motion, concentrates on the relationship between speed and energy and the energy changes that occur during collisions. As you teach, model how scientists and engineers use practices to understand and communicate content that is connected across disciplines. Performance Expectations 4-PS3-1 Use evidence to construct an explanation relating the speed of an object to the energy of that object. 4-PS3-3 Ask questions and predict outcomes about the changes in energy that occur when objects collide. More detailed can be found on pages T34–T35. Crosscurricular Connections ELA/Literacy RI.4.1 Refer to details and examples in a text when explaining what the text says explicitly and when drawing inferences from the text. W.4.2 Write informative/explanatory texts to examine a topic and convey ideas and information clearly. Online Content att cconnectED.mcgraw-hill.com ModuleEnergy and Motion 2D ENERGY AND MOTION INSPIRING ALL STUDENTS Are you ready to inspire your students with exciting science content? These pages will help you reach all of your students. Use these strategies to scaffold your instruction and plan for successful teaching. Differentiated Instruction Module Concept Objects moving at greater speeds have more energy. Collisions result in a transfer of energy. Help students connect these key module concepts. Approaching Level Roll a ball across a desk slowly and then quickly. Ask students to explain what they observed using the words speed and energy. On Level Have students make a prediction about what will happen when a ball is rolled slowly into another stationary ball and then quickly into the same stationary ball. Allow students to investigate their predictions and explain what happened. Beyond Level Have students research how energy is transferred in a collision involved in sports (a baseball bat hitting a baseball, football players hitting each other). Ask students to explain how the equipment used in the sport is designed for the collision. ELL Strategies Activate Prior Knowledge To introduce the concepts of potential and kinetic energy, create a two-column chart with the headers Moving and Not Moving. Collect and display pictures showing examples of kinetic energy and potential energy. Ask students to compare the pictures. Glue the pictures to the most appropriate column of the chart. Encourage students to describe each picture in detail. Label pictures with nouns and verbs as appropriate. Once students are introduced to the terms kinetic energy and potential energy in the module, relabel the headers and review with students. Emerging Level Clarifying Questions Use the pictures on the Moving and Not Moving chart to model how to ask questions for clarification. Point to pictures and ask, What is this? Then have each student point to an image and ask, What is this? Respond with the correct answers. Then point to a word on the chart and ask, What is this word? Encourage each student to point at any word on the chart and ask, What is this word? Respond accordingly. Have the students randomly point to terms or pictures and practice asking the appropriate clarifying questions. 2EModuleEnergy and Motion Expanding Level Act It Out Post and review the definitions for speed, acceleration, and velocity on a Science word wall. Have students act out the terms as they walk throughout the classroom. For example, have students walk for 10 seconds to model speed. Then have students walk a slow speed that gradually accelerates to a faster speed. Finally, have students model velocity by walking in a specific direction. Bridging Level Share What You Know Inspire Bridging Level students to share expertise of their native languages by encouraging them to teach spelling and pronunciation of lesson vocabulary to the class or small groups. Encourage students to use an appropriate translation tool to ensure their native language spellings are correct. Point out cognates to students where appropriate. Terms can be included with their English counterparts on the Science word wall for diverse reference. Literacy Support: Using the Leveled Readers Inspire Science offers five versions of each Leveled Reader (Approaching Level, On Level, Beyond Level, ELL, and Spanish) to ensure success for all learners. A fictional story included in each Leveled Reader engages students in key lesson topics. The nonfiction portion of each Leveled Reader focuses on real-world topics and makes informational text accessible to all learners. This approach enables students to further develop their literacy skills in science. Sources of Energy It’s Electric! Nonfiction Nonfiction Summary This book identifies the different sources of energy people have used in the past and continue to use, along with new energy sources. Summary This book explains how electricity is generated from different energy sources and delivered to homes. Nonfiction Nonfiction SOURCES SOURCES OF SOURCES OF ENERGY SOURCES OF ENERGY OF ENERGY ENERGY by Janet Helenthal by Janet Helenthal The Solar Hot Dog The Solar Hot Dog The Solar Hot Dog The Solar Hot Dog OFC_OBC_SC_A_LRO_G4_M1_CVR_134464.indd i OFC_OBC_SC_A_LRA_G4_M1_CVR_134463.indd i 1/31/15 7:10 PM 1/31/15 7:09 PM 1/31/15 7:10 PM 1/31/15 7:30 PM Lexile Level Approaching On Level Beyond ELL 570 620 740 580 by Anna Prokos by Anna Prokos When to Use Use this book at the end of the Elaborate section in Lesson 2 to show examples of energy transfer. Point out the different energy transfers that occur as electricity is generated at a power plant and moves through power lines and into homes. Discuss the law of conservation of energy as you read about the path that electricity takes to get to homes. by Anna Prokos When to Use Use this book in the Explain section of Lesson 1 after discussing kinetic and potential energy. This book serves as an introduction to energy and connects lesson content to the real world. Help students understand that nuclear energy and fossil fuels are stored energy, so they are types of potential energy. Hydropower, solar energy, and wind energy involve motion, so they are forms of kinetic energy. OFC_OBC_SC_A_LRE_G4_M1_CVR_134906.indd i It’s It’s Electric! It’s Electric! It’s Electric! Electric! Nonfiction Nonfiction by Anna Prokos by Janet Helenthal by Janet Helenthal OFC_OBC_SC_A_LRB_G4_M1_CVR_134905.indd i Nonfiction Nonfiction Short-Circuit! Short-Circuit! Short-Circuit! OFC_OBC_SC_A_LRE_G4_M1_CVR_134915.indd i 1/31/15 7:16 PM Short-Circuit! OFC_OBC_SC_A_LRB_G4_M1_CVR_134914.indd i 1/31/15 7:14 PM OFC_OBC_SC_A_LRO_G4_M1_CVR_134911.indd i 1/31/15 7:15 PM OFC_OBC_SC_A_LRA_G4_M1_CVR_134909.indd i 1/31/15 7:13 PM Lexile Level Approaching On Level Beyond ELL 560 770 880 670 Before Reading Before Reading Build Background Start a word web around the term energy sources. Prompt students by asking: Is the Sun an energy source? Build Background Ask pairs to keep a sequence chart to find out how electricity reaches our homes. During Reading Model Cueing Systems Point out the word hydropower. Write it on the board and underline the combining form hydro. Ask students what they think hydro means. (water) Share other words that include this combining form: (fire) hydrant and hydroplane. Model Cueing Systems Review the meaning of the word hydropower. Note the combining form hydro- (water). Repeat with the word geothermal eliciting the meaning of the combining forms geo- (Earth) and therm- (heat). Lead students to see that hydropower uses water to produce energy and that geothermal energy comes from heat inside Earth. After Reading After Reading Summarize Have groups review their notes and look through the text to summarize what they have learned. Summarize Help pairs use their sequence chart to summarize the information in the book. During Reading Additional Literature Selections Energy. Bowden, Rob. KidHaven Press, 2004. Use these books, available at your local library or bookstore, to further develop student’s literacy skills in science. Forces and Motion. Graham, John. Kingfisher, 2001. Online Content att cconnectED.mcgraw-hill.com Forces and Movement. Riley, Peter. Smart Apple Media, 2006. ModuleEnergy and Motion 2F MODULE OPENER MODULE OPENER Science in Our Worl MODULE OPENER Science in Our Worl Key Vocabulary BEGIN MODULE OPENER PRESENTATION acceleration conservation of energy contact forces energy energy transfer gravity Go online to connectED.mcgraw-hill.com inertia kinetic energy noncontact forces potential energy speed velocity mac/Alamy Energy and Motion Science in Our World Phenomenon Introduce the module phenomenon by showing the photo of a roller coaster. Ask students to think of questions they have relating to the speed and energy of moving objects. Have them record questions on page 2 in their Be a Scientist Notebook. Use the questions below to elicit student responses. ASK: ▸How would you describe the motion of the roller coaster? Sample answer: The roller coaster is moving very fast. ▸How would you describe the energy of the roller coaster? Why did you describe it in that way? Sample answer: The roller coaster has a lot of energy because it is moving fast. ▸Where does the roller coaster get its energy? Sample answer: The roller coaster gains energy as chains pull it to the top of a hill. Help students turn their observations from the photo into questions that they can refer to during the module. Let students know that they do not need to be able to answer the questions that they generate now. They will return to them later in the module. Be a Scientist Notebook, p. 2 MODULE OPENER Name Date Energy and Motion Science in Our World Roller coasters travel fast! They travel up and down hills. Some even make loops! Look at the photo of the roller coaster. What questions do you have? Sample questions: How much energy do roller coasters have? What makes a roller coaster move? Where does a roller coaster get its energy? How do roller coasters stop? Key Vocabulary acceleration conservation of energy contact forces energy energy transfer gravity inertia kinetic energy noncontact forces potential energy speed velocity 2 Module Opener Energy and Motion 2ModuleEnergy and Motion Copyright © McGraw-Hill Education Look and listen for these words as you learn about energy and motion. Key Vocabulary Point out the Key Vocabulary in the Module Opener of the Be a Scientist Notebook. acceleration conservation of energy contact forces energy energy transfer gravity inertia kinetic energy potential energy speed noncontact forces velocity These words are a selection of important vocabulary that will be used throughout the module. Remind students to listen for these Key Vocabulary words as they complete the module. Students begin each lesson by making observations in the Engage and Explore sections, prior to learning the lesson vocabulary. In these sections of the lessons, students are expected to explain what they observe using familiar words. Vocabulary is introduced at the beginning of the Explain section. After learning the vocabulary and definitions, students are expected to transition to using these academic vocabulary words in their observations and explanations. Students will learn these words and use them in context by the end of the lesson. MODULE OPENER MODULE OPENER STEM Career Connection Mechanical Engineer Science and Engineering Practices I will construct explanations and design solutions. Roller coasters can be a fun and exciting adventure. Have you ever thought about who is responsible for building amusement park rides, like the roller coaster in the last image? I will ask questions and define problems. HANNAH Welder Pixtal/age fotostock Mechanical engineers research, design, build and test machines some even get to work on roller coasters! STEM Career Connection Mechanical Engineer Have students read about the mechanical engineer on page 3 in the Be a Scientist Notebook. Mechanical engineers are involved in product design. They consider things like speed and acceleration, efficiency, and safety in their designs. Students will draw and label a diagram to show how they think roller coasters work. I will construct explanations and design solutions. I will ask questions and define problems. Have students read the “I will…” statements on page 3 in their Be a Scientist Notebook. The “I will…” statements for this module reference the Science and Engineering Practices of asking questions, defining problems, constructing explanations, and designing solutions. If this is the first time you are teaching the Science and Engineering Practices of constructing explanations, then help the students understand that an explanation is a claim or idea that is supported by evidence that has been tested and verified. Some examples of evidence that scientists use to support their explanations are measurements, observations, and patterns. Ask students what are other examples of scientific evidence that scientists might use. If students need more help understanding the Science and Engineering Practices of asking questions, defining problems, constructing explanations, and designing solutions, then have them review pages 6—7 and 16—17 in the Science Handbook. Be a Scientist Notebook, p. 3 Name Science and Engineering Practices Date MODULE OPENER How can I use what I know about energy and motion to design a roller coaster? HANNAH Welder STEM Career Connection Mechanical Engineer When you are a mechanical engineer, there is no typical day! Every day is different. We have many responsibilities. There are different types of mechanical engineers. I work on roller coasters. Some days, I use the computer at my office to make designs. Other days, I test prototypes. Still other days, I meet with scientists, other engineers, and construction crews to talk about designs and construction. Making sure roller coasters are safe is one of the most important parts of my job. Draw and label a diagram to show how you think roller coasters work. Copyright © McGraw-Hill Education Students may draw a roller coaster with a high hill or loops and label the diagram with words that explain how it works. Science and Engineering Practices I will construct explanations and design solutions. I will ask questions and define problems. Online Content at cconnectED.mcgraw-hill.com Online Content att Module Opener Energy and Motion 3 cconnectED.mcgraw-hill.com ModuleEnergy and Motion 3 LESSON 1 Energy and Speed Disciplinary Core Ideas PS3.A Definitions of Energy Essential Question Crosscutting Concepts How are energy and speed related? Energy and Matter Science and Engineering Practices Objective Constructing Explanations and Designing Solutions Students will explain the relationship between the speed and the energy of an object. PACING ASSESS LESSON READINESS ENGAGE EXPLORE EXPLAIN VOCABULARY 0.5 DAY DAY-TO-DAY Page Keeley Science Probe Be a Scientist Notebook, p. 4 Science in Our World Be a Scientist Notebook, pp. 5–6 Race Car Video Essential Question 1 DAY RESOURCES Science and Engineering Practices Inquiry Activity Be a Scientist Notebook, pp. 7–8 Obtain and Communicate Information Be a Scientist Notebook, pp. 9–12 2 DAYS 2.5 DAYS speed velocity acceleration energy potential energy kinetic energy Reflect and Refine Science and Engineering Practices Science Handbook, Measuring Motion pp. 278–280 Science Handbook, Energy pp. 296–299 Visual Kinesthetic Vocabulary®, Be a Scientist Notebook, p. VKV1 Speed and Energy Video Science Handbook, Energy, Mass, and Speed pp. 282–283 Notebook Foldable®, p. F1 ELABORATE Research, Investigate, and Communicate 1 DAY Inquiry Activty Be a Scientist Notebook, pp. 16–19 Performance Task EVALUATE 4AModuleEnergy and Motion eAssessment Essential Question 2 DAYS 9 DAYS Be a Scientist Notebook, pp. 13–15 Science and Engineering Practices 1 DAY = 45 MINUTES DIGITAL INTERACTIVE eBOOK VIDEO SCIENCE FILE Science Background Possible Misconception Energy is classified as kinetic energy (energy of motion) or potential energy. An object placed on a shelf has potential energy. If the object were to fall from the shelf, the potential energy would increasingly change to kinetic energy. The kinetic energy of the object increases as it falls, and the potential energy decreases as it falls. Any object that is moving has kinetic energy. The kinetic energy of an object depends on both the speed and mass of the object. When an object is not moving, it can have potential energy. Many students may also think that energy can be created or destroyed. For example, wood in a campfire is set on fire. The energy in the fire is lost. In fact, the energy is transferred to heat, which is dissipated back into the environment. Energy is conserved, meaning that energy can change form, but is not destroyed. INQUIRY ACTIVITIES / PERFORMANCE TASK MATERIALS FAST TRACK PACING RESOURCES Be a Scientist Notebook, pp. 5–6 1 DAY The Moving Marble Students will explore how the height of a ramp affects the speed of a marble. Race Car Video 4 books, cardboard tube, tape, stopwatch, marble Be a Scientist Notebook, pp. 9–12 Science Handbook, Measuring Motion pp. 278–280 Science Handbook, Energy pp. 296–299 2 DAYS Speed and Energy Video Science Handbook, Energy, Mass, and Speed pp. 282–283 Notebook Foldables®, p. F1 Mass Matters Students will observe how mass affects the kinetic energy of an object. safety goggles; 2 books; thin, flat board; meterstick; masking tape; 500–mL plastic bottle with screw cap; graduated cylinder; pan balance; plastic cup; water Test Toy Cars Students will conclude from data that toy cars launched with more rubber bands will have more energy. safety goggles, masking tape, meterstick, 2 wooden blocks securely fastened with nails, rubber bands, toy car, stopwatch SIMULATION Online Content att GAME VKV NOTEBOOK FOLDABLES cconnectED.mcgraw-hill.com eAssessment 1 DAY 4 DAYS 1 DAY = 45 MINUTES Lesson 1Energy and Speed4B ASSESS LESSON READINESS ASSESS LESSON READINESS Page Keeley Science Probe ASSESS LESSON READINESS Page Keeley Science Probe When Does It Have Energy? BEGIN LESSON PRESENTATION Who do you agree with most? Explain why you agree. Go online to connectED.mcgraw-hill.com Four friends were playing kickball. They each had different ideas about the ball and energy. This is what they said: Energy and Motion Lesson 1: Energy and Speed Page Keeley Science Probe When Does It Have Energy? Purpose This probe is intended to uncover students’ basic ideas about energy. Use the probe to assess prior knowledge and uncover misconceptions that will drive lesson instruction. Do not give students the answer. Students will return to the probe after completing the lesson to see how their thinking has changed. Using the Probe Use this probe prior to introducing the idea that all objects have energy. Examine students’ written explanations or listen carefully as they discuss the probe to determine whether students think there needs to be movement or activity in order for an object to have energy. Throughout the Lesson Use the students’ explanations as a bridge between the students’ initial ideas about energy and the scientific understanding of kinetic and potential energy they will develop through their learning opportunities. The probe can also be revisited after students have had an opportunity to develop a conceptual understanding of energy as a property Be a Scientist Notebook, p. 4 ASSESS LESSON READINESS Name Date SCIENCE PROBES Four friends were playing kickball. They each had different ideas about the ball and energy. This is what they said: Lily: The ball has to be on the ground, not moving, to have energy. Mike: The ball has to be moving to have energy. It doesn’t matter how fast it is moving. Otto: The ball has to be moving very fast to have energy. Ava: The ball has energy when it is both moving and not moving. Ava 4 Module Energy and Motion 4ModuleEnergy and Motion Copyright © McGraw-Hill Education Explain why you agree. Sample answer: A moving ball has energy, but the ball could still have energy when it is not moving if its position above the ground. of all objects, both moving and not moving. It will reveal whether students are still holding onto a misconception or have gaps in conceptual understanding. You can use this information to decide if further instruction is needed. Science and Engineering Practices This probe supports the scientific practice of argumentation. In choosing a person to agree with, students must construct an argument, supported by evidence, to explain why they agree or disagree with the others. Common Misconceptions A common misconception is that an object has to be active or moving in order to have energy. This misconception may come from our everyday use of the word energy. For example, when we are sluggish, and not moving, we are said to have no or little energy. Thus many students develop a preconception before they learn about energy in school that energy requires movement. Students often come to class with this strongly held preconception. Students who choose Lily may think energy needs to be stored in an object, and then when the object moves, the energy is released and used up. Students who choose Mike have the common misconception that an object must be active or moving to have energy. Students who choose Otto have a similar idea about movement as a requirement for having energy, but may think there has to be a certain amount of movement. The best answer is Ava. The ball has both potential and kinetic energy. It has kinetic energy when it moves under the pull of gravity. It has potential energy when it is not moving (energy of position or stored energy). Depending on the position of the ball, the amount of potential energy varies. For example, a stationary ball at rest on the top of a mountain is farther from sea level than a stationary ball at rest at the base of the mountain. Because it is farther from sea level (greater gravitational pull), the ball at the top of the mountain has more potential energy than the ball at the bottom of the hill (at sea level). When Does It Have Energy? Who do you agree with the most? PAGE KEELEY Teacher Explanation Energy and Speed PAGE KEELEY Lily: The ball has to be on the ground, not moving, to have energy. Mike: The ball has to be moving to have energy. It doesn’t matter how fast it is moving. Otto: The ball has to be moving very fast to have energy. Ava: The ball has energy when it is both moving and not moving. ENGAGE ENGAGE ENGAGE ENGAGE Science in Our World STEM Career Connection Automotive Engineer Watch the Video Play the video on the next slide. of the race car. Essential Question How are energy and speed related? All vehicles need energy to be able to do work and have speed. One type of engineer that works to understand energy and speed in vehicles is an automotive engineer. rti/E+/Getty Images RILEY Automotive Engineer Science in Our World Phenomenon Science often begins when someone makes an observation about a situation or occurrence. Scientists refer to an event or situation that is observed or can be studied as a phenomenon. Spark your students’ curiosity about the world by introducing the lesson phenomenon of a race car. Play the video and ask students what questions they have about the race car and have them record them on page 5 in the Be a Scientist Notebook. If students are having trouble generating their own questions, use the questions below to help guide a class discussion and get students thinking about what they saw and what they will learn in the lesson. ASK: ▸What did you see in the video? ▸What did you wonder about the race car? ▸Have you seen a race car before? Help students turn their observations from the video into questions that they can refer to during the lesson. Tell students that they do not need to be able to answer the questions that they generate right now. They will return to them later in the lesson. Date ENGAGE Science in Our World Watch the video of the race car. What questions do you have? Accept all reasonable questions. Sample questions: How does the car move so fast? Can I be a race car driver? Read about an automotive engineer and answer the questions on the next page. STEM Career Connection Automotive Engineer We are making great progress on the design of the new solar-powered bus! Today I completed the computer model of the vehicle. It looks great! Automotive engineers need to understand how speed, energy, and mass all work together. Tomorrow I will present the design to the rest of my team. They are concerned about the speed at which the bus will be able to travel. Many older versions usee too much energy and go very slowly over short distances. My new design will be able to carry people throughout the city quickly, and it will use less energy. y. Copyright © McGraw-Hill Education Introduce the automotive engineer STEM Career Connection. ASK: ▸Why would the career connection be an automotive engineer? Sample answer: Because some automotive engineers design race cars. ▸What role does an automotive engineer play in making a race car? Sample answer: They use what they know about energy and speed to design race cars. Mention that automotive engineers work on a variety of vehicles from race cars to solar-powered buses. Ask students if this is a career that interests them. Do they know someone who works on race cars or buses? Have students read the STEM Career Connection on page 5 in the Be a Scientist Notebook to learn more about what an automotive engineer does. Then have them answer the questions about the automotive engineer on page 6 in the Be a Scientist Notebook. If you want students to learn more about automotive engineers, have them read page 411 in the Science Handbook. Essential Question How are energy and speed related? Be a Scientist Notebook, p. 5 Name STEM Career Connection Automotive Engineer Have students read the Essential Question on page 6 in the Be a Scientist Notebook. Have them use prior knowledge and observations to try to answer the question. Remind students that they are not expected to know the answer to this question right now, but throughout the lesson they will learn more and be able to apply what they have learned to revise their answer at the end of the lesson. You might want to record students’ thoughts and questions about the Essential Question by using chart paper or the white board so they can reference them throughout the lesson. RILEY Y Automotive Automotivve Engineer If my team approves the design, our next step will ill bee to decide what type of materials we should use for th the he exterior and interior parts of the bus. My team and I will ill have to consider many factors, such as the strength, h, weight, and cost of the materials. Online Content at cconnectED.mcgraw-hill.com Online Content att Lesson 1 Energy and Speed 5 cconnectED.mcgraw-hill.com Lesson 1Energy and Speed 5 ENGAGE ENGAGE EXPLORE EXPLORE Science and Engineering Practices Inquiry Activity The Moving Marble I will construct explanations. How will the height of a ramp affect the speed of a marble? Make a Prediction Which do you think will move faster: a marble rolling down a ramp from a low height or a marble rolling down a ramp from a higher height? Explain your prediction. Science and Engineering Practices I will construct explanations. Have students read the “I will…” statement on page 6 in the Be a Scientist Notebook. Throughout the lesson, students will collect evidence that will be used to construct explanations relating energy and speed. If this is the first time you are teaching the Science and Engineering Practice of constructing explanations, tell students that engineers use what they know about science to solve problems. ASK: ▸How would an automotive engineer construct an explanation for how fast a race car can travel? Sample answer: An automotive engineer uses knowledge of energy and speed to construct an explanation for how to design a race car. Have students review page 16 in the Science Handbook. Inquiry Activity The Moving Marble small groups 30 mins Materials 4 books, cardboard tube, tape, stopwatch, marble Purpose Students will explore how the height of a ramp affects the speed of a marble. What to Expect The data should show a pattern where the greater the height of the ramp, the faster the marble rolls down it. Advanced Preparation Point out that students just saw a video of a fast-moving race car. Now they will investigate how height affects the speed of a marble. Have students bring in cardboard tubes from empty paper towel rolls. Make sure that the tubes are all the same length and made of similar cardboard. Collect books that are at least 3 cm thick. Ask students to practice using the stopwatch before beginning the activity. If time is short, set up the activity for students. Read the steps of the investigation on page 7 in the Be a Scientist Notebook together with students. Be a Scientist Notebook, p. 7 Be a Scientist Notebook, p. 6 ENGAGE Name Name Date 4 books How will the height of a ramp affect the speed of a marble? cardboard tube Make a Prediction Which do you think will move faster: a marble rolling down a ramp from a low height or a marble rolling down a ramp from a higher height? Explain your prediction. 2. Why might it be helpful to have a team of different people working on a project instead of just one person? tape stopwatch Sample answer: A marble rolling from a higher height would move faster because I go faster on taller slies. Sample answer: Others may notice problems that one person does not notice. Different people may have other solutions to offer. marble Carry Out an Investigation Essential Question 1 Stack three books on top of each other. Place one end of a cardboard tube on top of the stack. The other end of the tube will touch the spine of the fourth book. Tape tube in place. 2 Start the stopwatch when you roll the marble down the tube. Stop the timer when you hear the marble hit the fourth book. 3 Record Data Record the time in the data table. Repeat steps 2 and 3 three more times. 4 Repeat steps 2 and 3 three times with two books stacked. Then repeat steps 2 and 3 three times with only one book. Calculate the average time for each trial. 5 Make a bar graph on a separate sheet of paper comparing the results for three books, two books, and one book. 6 Analyze Data Circle the stack of books with the fastest times. How are energy and speed related? Sample answer: The energy of an object increases as you increase that object’s speed. I will construct explanations. EXPLORE Materials The Moving Marble Sample answer: The next step is to decide what type of materials they should use for the exterior and interior parts of the bus. Science and Engineering Practices Date Inquiry Activity 1. What are the next steps if the automotive engineer's design is approved? Like an engineer, you will use evidence to explain what you learn in this lesson. on. Module Energy and Motion 6ModuleEnergy and Motion Copyright © McGraw-Hill Education Copyright © McGraw-Hill Education Marble Travel Time (seconds) Trial 1 Trial 2 Trial 3 Average Three Books Two Books One Book Online Content at cconnectED.mcgraw-hill.com Lesson 1 Energy and Speed 7 EXPLORE EXPLORE Inquiry Activity to r, t to b)©Tavis Wright/Image Source, all rights reserved., 2)Comstock Images/Alamy,(3)Ken Cavanagh/McGraw-Hill Education, 4)D. Hurst/Alamy,(5)Ken Karp/McGraw-Hill Education Inquiry Activity Make a Prediction Help students make a prediction. Remind them that a prediction is a statement of what they expect to observe in the future. Tell them to write their predictions on page 7 in the Be a Scientist Notebook. Then have students explain their predictions based on previous observations. Carry Out an Investigation 1 Help students stack the books and set up the cardboard tube. Three books should be approximately 9 cm from one book. The end of the cardboard tube should be on the table and flush with the spine of the book. 2 For accuracy, have the same student release the marble and start the stopwatch for each trial. The stopwatch should be stopped when students hear, not see, the marble hit the book. 3 Record Data Make sure students are recording data correctly in the table. Be a Scientist Notebook, p. 8 EXPLORE Name Date Communicate Information 1. Did your results match your prediction? Explain. Sample answer: My results did support my prediction. The marble moved faster down the highest ramp. Have students share their observations and data with those of their classmates. ASK: ▸How do your results compare to the results of your classmates? Sample answer: The rest of my classmates have similar results. The marble traveled the fastest down the ramp with three books. ▸Do you see any patterns in your data? If so, what patterns do you see? Sample answer: Yes. The higher the books, the faster the marble makes it to the bottom. Or the lower the books, the slower the marble makes it to the bottom. What you should observe in this discussion is the ability of your students to articulate the relationship between the height of the tube and the speed of the marble. The height of the tube represents the potential energy (which they will learn about later in the lesson) and the relationship of that to the speed (kinetic energy) of the marble. ASK: ▸Which setup made the marble travel fastest? Sample answer: The marble traveled fastest when three books were stacked. ▸How do you think that the height of the marble related to its motion? Sample answer: The higher the marble, the faster it moved down the tube. Copyright © McGraw-Hill Education Sample answer: The marble went down the ramp more slowly because it had less energy. Talk About It Glue your graph here. 3. Construct an Explanation What happened to the speed of the marble when you used fewer books? Why do you think this happened? Analyze Data Encourage students to look for a pattern in the graph that they made from their data. The bar graph should show that the marble had the greatest speed rolling down the steepest ramp. Have students complete the questions on page 8 in the Be a Scientist Notebook. 2. In which trial do you think the marble had the most energy? Explain. Sample answer: The marble had the most energy with the highest ramp. The marble traveled faster with three books, so it had more energy. 6 8 Module Energy and Motion Online Content att cconnectED.mcgraw-hill.com Lesson 1Energy and Speed 7 EXPLAIN EXPLAIN EXPLAIN Obtain and Communicate Information Obtain and Communicate Information Vocabulary speed the distance an object moves in an amount of time velocity the speed and direction of an object acceleration a change in velocity over time Launch the Science Handbook on the next slide. energy the ability to do work potential energy the energy that is stored inside an object kinetic energy the energy an object has because it is moving Read the Science Handbook. Obtain and Communicate Information Measuring Motion Vocabulary Have students open to page 9 in the Be a Scientist Notebook. Read the vocabulary words listed aloud. Have students circle vocabulary words that they have heard before. Using the teacher presentation slide, display the words and their definitions. You might want to have students add the words to a word wall so they can reference them as they move through the lesson. Explain to students that they will see the words used throughout the lesson. speed the distance an object moves in an amount of time velocity the speed and direction of an object acceleration a change in velocity over time energy the ability to do work potential energy the energy that is stored inside an object kinetic energy the energy an object has because it is moving Students should have encountered the following words in their previous learning: motion, mass, force, matter, and work. Have students read pages 278–280 in the Science Handbook. Students will be introduced to the vocabulary words speed, velocity, and acceleration. By the end of this reading, students will understand how these words can be used to describe motion. Have students answer the questions on page 9 in the Be a Scientist Notebook. Develop Vocabulary speed Mention to students that various combinations of units of distance and time may be used to represent an object’s speed, such as feet per second. Mathematically, the term per means “divided by.” velocity Stress that velocity is a combination of speed and direction. acceleration Point out that acceleration is the noun form of “accelerate,” which has its origin in the Latin words accelerare, meaning “hasten,” and celer, meaning “swift.” Science Handbook, pp. 278–280 Be a Scientist Notebook, p. 9 Name If students need to review these words, have them look them up in the Science Handbook. Make sure students understand what these words mean before continuing in the lesson. Date Measuring Motion EXPLAIN To describe motion more completely, you also need to find the amount of time it takes an object to move a certain distance. With measures of distance and time, you can describe motion and how it changes. Obtain and Communicate Information Vocabulary Use these words when explaining speed and energy. speed velocity acceleration energy potential energy kinetic energy Calculating Speed Speed The speed of an object is how fast its position changes over time. To calculate speed, divide the distance traveled by the time the object travels. Units of speed are units of distance per unit of time, such as meters per second (m/s), kilometers per hour (km/h), or miles per hour (mph). Measuring Motion Read pages 278–280 in the Science Handbook. Answer the following questions after you have finished reading. distance = 100 m time = 10 s speed = distance ÷ time = 100 m ÷ 10 s = 10 m/s 1. How do you calculate speed? Sample answer: Speed equals distance divided by time. These are the fastest speeds of animals over short distances. 2. Describe how velocity is different from speed. Sample answer: Velocity includes the direction of an object, but speed does not. giraffe 14 m/s 3. How are speed and acceleration different? bee 8 m/s eagle 33 m/s Sample answer: Speed is distance over time and acceleration is the rate at which velocity changes. Energy horse 21 m/s Copyright © McGraw-Hill Education Read pages 296–299 in the Science Handbook. Answer the following questions after you have finished reading. turtle 2 m/s 4. What happens to the potential energy of an object when the object is raised higher? Sample answer: The potential energy increases. Online Content at cconnectED.mcgraw-hill.com 8ModuleEnergy and Motion cheetah 30 m/s dolphin 12 m/s Lesson 1 Energy and Speed 9 278Physical Science EXPLAIN Obtain and Communicate Information Launch the Science Handbook on the next slide. Read the Science Handbook. Math Connection Make sure students understand how to calculate speed using distance and time. This will be important for inquiry activities later in the lesson. Speed is calculated by dividing distance traveled by the time spent. Work through the problem below together. ASK: ▸If a race car traveled a distance of 500 km in 2 h, what was the car’s average speed? 500 km ÷ 2 h = 250 km/h Differentiated Instruction Approaching Level Have students work in pairs to model a change in speed versus a change in velocity. On Level Have students describe a scenario using the words speed, velocity, and acceleration in their description. Beyond Level Ask students to research the difference between average speed and instantaneous speed and to provide a scenario that shows the difference. Energy Have students read pages 296–299 in the Science Handbook. While reading, students will encounter the vocabulary words: energy, potential energy, and kinetic energy. ASK: ▸What clues are there in the second paragraph on page 297 about the meaning of the word elasticity? Stretched, compressed, and release all imply that something elastic will bounce back when stretched or compressed. ▸Explain how an airplane in flight has both potential and kinetic energy. Sample answer: The airplane has potential energy because it is above the ground and gravity gives it potential to fall. It has kinetic energy because it is moving. Visual Kinesthetic Vocabulary Have students cut out and fill in the Dinah Zike Visual Kinesthetic Vocabulary from page VKV1 in the Be a Scientist Notebook. Tell students that energy is the ability to do work and that the word potential also means possible. Help students make the connection that things with potential energy have the possibility of moving and those things with kinetic energy are in motion. Have students complete the questions on pages 9-10 in the Be a Scientist Notebook. Science Handbook, pp 296–299 Be a Scientist Notebook, p. 10 EXPLAIN Name Date 5. Explain how kinetic energy and speed are related. Sample answer: For any given object, a higher speed means higher kinetic energy. Energy Energy is the ability to do work or to change an object. The units of energy are expressed the same way as the units of work—joules (J). A volcano uses energy to erupt and change the land around it. Plants use energy to grow. Ocean waves move and crash against rocks because they have energy. The changes that you see happening around you involve using energy. Speed and Energy Watch the video Speed and Energy. Answer the question after you have finished watching. 6. Use one of the examples from the video to describe the relationship between energy and speed. Sample answer: A cheetah needs more energy to run fast than it does to rest. Using Energy energy to change things energy to grow energy to do work Read pages 282–283 in the Science Handbook. Answer the following questions after you have finished reading. 7. What is a force? Sample answer: A force is any push or pull. 8. How does the size of a force affect the acceleration of an object? Sample answer: For any given object, a greater force leads to a greater acceleration. 9. How does the mass of an object affect the acceleration of an object when you apply a force? Sample answer: When the same force is applied, a greater mass leads to a slower acceleration. 296Physical Science Copyright © McGraw-Hill Education energy to move (tl) Jim Vallance/USGS; (tr) Jaap Hart/Getty Images; (bl) Design Pics/Don Hammond; (br) Steve Allen/Brand X Pictures Energy, Mass, and Speed 10 Module Energy and Motion Online Content att cconnectED.mcgraw-hill.com Lesson 1Energy and Speed 9 EXPLAIN EXPLAIN EXPLAIN Obtain and Communicate Information Watch the Video to learn about speed and energy. Obtain and Communicate Information Launch the Science Handbook on the next slide. Play the video on the next slide. Read the Science Handbook. Speed and Energy Have students watch the video Speed and Energy. Students have read about the relationship between speed and kinetic energy on pages 296–299 in the Science Handbook. This video shows examples of this relationship. Pause the video after the narrator asks: “What is the relationship between speed and energy?” Ask students to respond to this question using what they have learned so far. Then show students the rest of the video. Have students complete the question on page 10 in the Be a Scientist Notebook. Energy, Mass, and Speed Have students read pages 282–283 in the Science Handbook. Student will learn about how forces are related to energy and speed and how mass affects these forces. Students will revisit the vocabulary word acceleration. Students will also encounter the word contact forces in this reading, but will learn more about contact forces in Lesson 2. Use the Visuals Have student look at the diagram on page 283 in the Science Handbook. Tell them that the sizes of the arrows indicate the amount of force or acceleration. ASK: ▸What does the red arrow represent? force ▸What does the green arrow represent? acceleration ▸How is the bottom image different from the other two images? How is the acceleration affected by this difference? The image at the bottom shows a cart with two boxes. The acceleration is less. ▸What does this tell us about the relationship between mass and speed? It takes more force to change the speed of something with more mass. Have students complete the questions on page 10 in the Be a Scientist Notebook. Science Handbook, pp. 282–283 Force A force is any push or pull. A force can cause an object to start moving or change direction. It can also cause an object to speed up, slow down, or stop. In each case, the force accelerates the object. The arrow of the compass is a small magnet. One end of it is attracted to Earth's magnetic north pole. Some forces, such as a bat hitting a ball, act for a short time. Other forces, such as bicyclist pedaling steadily, act continuously. Many forces occur as one object touches another. These are called contact forces. If you push a cart, for example, you apply a contact force to the cart. Other forces occur without objects touching. These are called noncontact forces. A compass needle swings to point north because of Earth's magnetic force. The force that moves the needle is not touching it. The force of magnetism pulls the needle. Magnetism is a noncontact force. The brief, contact force from the swinging bat accelerates the ball. (t) C. Zachariasen/PhotoAlto; (b) ©Akihiro Sugimoto/age fotostock Diagrams of force often use arrows to show the strength and direction of forces. The length of a force arrow shows how strong the force is. Units of force are the newton (N) and the pound (lb). 282Physical Science 10ModuleEnergy and Motion EXPLAIN EXPLAIN Obtain and Communicate Information Obtain and Communicate Information Talk to your partner about the differences between potential and kinetic energy. Use what you have learned to complete the Notebook Foldables activity. DINAH ZIKE ∏ Notebook Foldables whole class 20 mins Have students use Notebook Foldables® as a tool to organize important lesson information. Copy page F1 of your Teacher’s Edition for each student. Have students cut out the Notebook Foldables tabs and glue the anchor tabs to the designated areas on page 11 in the Be a Scientist Notebook. Have students use their understanding of kinetic and potential energy to describe how each image demonstrates kinetic or potential energy. Make sure they consider what happens both when the object is at rest and when it is moving. Students can return to the Notebook Foldables Activity throughout the lesson or module for reference or at the end of the lesson or module as a study guide. Talk About It Use the Talk About It question to assess students’ understanding of what they have learned so far. If students do not demonstrate an understanding about the difference between potential and kinetic energy, then have them revisit some activities in this lesson. The Moving Marble Have students revisit The Moving Marble Activity on page 7 in the Be a Scientist Notebook. Have them use what they have learned in this lesson to draw and label a diagram of the investigation setup on page 12 in the Be a Scientist Notebook. Have students use lesson vocabulary to show the energy the marble possesses. Their diagrams should show the marble with potential energy at the top of the tube and increasing kinetic energy as it rolls down through the tube. It should also indicate that as the marble rolls down the tube, its potential energy decreases. The potential energy does not become zero until it reaches the bottom of the ramp. Have students answer the questions on page 12 of the Be a Scientist Notebook. Be a Scientist Notebook, p. 12 Be a Scientist Notebook, p. 11 Name ASK: ▸What is the difference between potential and kinetic energy? Potential energy is energy that is stored in an object. Kinetic energy is energy due to an object’s motion. Date EXPLAIN EXPLAIN Name Date The Moving Marble 10. Revisit The Moving Marble activity on page 7. Draw and label a diagram of your setup. Use lesson vocabulary to label the type of energy that was present throughout the marble's movements. Glue anchor tab here. Glue anchor tab here. Cut out the Notebook Foldables tabs given to you by your teacher. Glue the anchor tabs as shown below. Use what you have learned to describe how the soccer ball and the apple could have kinetic or potential energy. The diagram should show the marble with potential energy at the top of the tube and kinetic energy when it is moving in the tube. Students should also show that the marble has potential energy while moving down the tube. 11. How does your diagram show the relationship between potential and kinetic energy? Use lesson vocabulary in your response. Sample answer: The diagram shows that as potential energy decreases, kinetic energy increases when the marble starts moving. Science and Engineering Practices Use examples from the lesson to explain ain what you can do!! Sample answer: I can use evidence to construct an explanation about how increasing energy causes an increase in speed. Copyright © McGraw-Hill Education I can Online Content at cconnectED.mcgraw-hill.com Online Content att Lesson 1 Energy and Speed 11 cconnectED.mcgraw-hill.com Copyright © McGraw-Hill Education Think about the evidence that you have collected throughout the lesson that shows the relationship between energy and speed. Tell how you can construct explanations by completing the “I can . . .” statement below. Module Energy and Motion Lesson 1Energy and Speed 11 EXPLAIN EXPLAIN Obtain and Communicate Information EXPLAIN Obtain and Communicate Information Quick Check EXPLAIN Reflect and Refine When Does It Have Energy? Infer What happens to the amount of energy a car has when the car goes faster? Clues What I Know Has your thinking changed? If so, how? What I Infer EXPLAIN Science and Engineering Practices I can construct explanations... Four friends were playing kickball. They each had different ideas about the ball and energy. This is what they said: Lily: The ball has to be on the ground, not moving, to have energy. Mike: The ball has to be moving to have energy. It doesn’t matter how fast it is moving. Otto: The ball has to be moving very fast to have energy. Ava: The ball has energy when it is both moving and not moving. Reflect and Refine ELL Support Perform the steps in the Moving Marble activity again with students. At each stage, talk about the type of energy that is present. Have students create their diagram as they watch. Emerging Level Students can identify the type of energy present with single word answers. Expanding Level Students can use phrases or short sentences to describe the type of energy present. Bridging Level Students can discuss in detail the types of energy present. Use this opportunity to do a quick assessment of the students’ understanding to determine if they are ready to move on. Display the Quick Check slide from the teacher presentation and ASK: ▸Infer What happens to the amount of energy a car has when the car goes faster? Complete the graphic organizer as a class. If students were not able to make the connection between energy and speed, have them rewatch the Speed and Energy video. Have them compare the car to the cheetah. Tell them that the cheetah and car both have more energy when they are moving faster. The car goes faster. At this point, students can go back to the Page Keeley Science Probe on page 4 of the Be a Scientist Notebook to decide whether they would like to change or justify their response. Students have had an opportunity to develop a conceptual understanding of energy as a property of all objects, both moving and not moving. Revisiting the probe here will reveal whether students are still holding on to a misconception or have gaps in conceptual understanding. Science and Engineering Practices I can construct explanations. Quick Check Clues When Does It Have Energy? What I Know The faster an object is moving, the more energy it has. What I Infer The car will have more energy. Have students complete the “I can…” statement on page 12 in the Be a Scientist Notebook. The “I can…” statement for this lesson references the Science and Engineering Practice of constructing explanations. ASK: ▸What did you explain in any of the investigations that you conducted? Sample answer: I explained how the marble went faster through the tube when I used 3 books. ▸What evidence did you use in your explanations? Sample answer: I used the recorded times for each trial as evidence to determine and explain which setup was the fastest. They should understand that the object in motion has energy because it is in motion. They should have indicated this as kinetic energy on their diagram. Differentiated Instruction Approaching Level Have students identify whether a moving car has potential or kinetic energy. On Level Have students explain why the speed of the ball is important in bowling. Beyond Level Have students design a simple experiment showing that the faster an object is moving, the more energy it has. 12ModuleEnergy and Motion ELABORATE ELABORATE ELABORATE Research, Investigate, and Communicate Research, Investigate, and Communicate Inquiry Activity Mass Matters You will observe how mass affects the kinetic energy of an object. You will use objects with different masses traveling at the same speed. (l to r, t to b)©Tavis Wright/Image Source, all rights reserved., (2)Comstock Images/Alamy,(3)Ken Cavanagh/McGraw-Hill Education, (4)D. Hurst/Alamy,(5)Ken Karp/McGraw-Hill Education Write a Hypothesis Read the activity. How will increasing the mass of the water bottle affect the distance the plastic cup moves? Write a hypothesis in the form of an “If..., then...” statement. Research, Investigate, and Communicate Inquiry Activity Read the steps of the investigation on pages 13–14 in the Be a Scientist Notebook together with students. Mass Matters small groups Advanced Preparation Review how to make line graphs with students. Ensure that students know how to label the X and Y axes and plot their data. It may also be helpful to practice using the pan balance ahead of time. Have the ramps set up with the starting points already marked. The bottles of water can also be prepared ahead of time. 40 mins Safety Students should wear goggles during this activity. Materials safety goggles, 2 books, thin, flat board, meterstick, masking tape, 500–mL plastic bottle with screw cap, graduated cylinder, pan balance, plastic cup, water Purpose Students will observe how mass affects the kinetic energy of an object. Write a Hypothesis Help students write a hypothesis. Remind them that a hypothesis is an explanation based on what they already know, and a starting point for a new investigation. Tell them to write their hypothesis on page 13 in the Be a Scientist Notebook. Then have students explain their hypothesis based on previous observations. What to Expect Students will use different amounts of water to change the mass of a bottle of water. They will roll the bottle down a hill and measure how far it is able to move a plastic cup. The distance the cup moves is used to measure the kinetic energy of the bottle of water. Carry Out an Investigation Be a Scientist Notebook, p. 13 Be a Scientist Notebook, p. 14 Date Explain that one end of the board will go on the table and the other on the books. Make a sample ramp for students if necessary. ELABORATE Research, Investigate, and Communicate Inquiry Activity ELABORATE Materials Place the empty cup at its starting point. Place the bottle at its starting point. Let go of the bottle and allow it to run into the cup and move it. 5 Record Data When both the cup and the bottle have stopped moving, use the meterstick to measure the distance the cup moved from its starting point. Record your data. safety goggles 2 books Mass Matters thin, flat board You will observe how mass affects the kinetic energy of an object. You will use objects with different masses traveling at the same speed. Write a Hypothesis Read the activity. How will increasing the mass of the water bottle affect the distance the plastic cup moves? Write a hypothesis in the form of an “If..., then...” statement. Sample answer: If the mass of the water bottle is greater, then it will move the cup farther. Carry Out an Investigation meterstick masking tape 500-mL plastic bottle with screw cap 6 Repeat steps 4 and 5 two more times. Record your data. 7 Add 100 mL more water to the bottle. Measure the mass. Repeat steps 4-6 to get three trials with the new mass. Record your data. 8 Add 100 mL more water to the bottle. Measure the mass. Repeat steps 4-6 to get three trials with the new mass. Record your data. 9 Analyze Data Using the data collected, create a line graph on a separate sheet of paper showing the relationship between the mass of the bottle and the average distance the cup moved. Use a ruler if necessary to create straight lines. Label the X and Y axes and title the graph. pan balance plastic cup water graduated cylinder 2 Measure 20 cm from the bottom of the ramp and mark the distance with tape. This will be the starting point of the cup for each trial. 3 Fill the bottle with 100 mL of water. Screw the cap on tightly. Measure the mass of the water and bottle on the pan balance, and record the measurement below. Mass of 100-mL Water Bottle Mass of 200-mL Water Bottle Trial 1 Trial 2 Mass of 300-mL Water Bottle Trial 3 Average Distance Online Content at cconnectED.mcgraw-hill.com Online Content att Lesson 1 Energy and Speed 13 cconnectED.mcgraw-hill.com Copyright © McGraw-Hill Education Copyright © McGraw-Hill Education Stack two books. Place one end of the board on the books to form a ramp. Mark the ramp where the ramp touches the books to use as the starting point for the bottle. Date Distance Cup Distance Cup Distance Cup Moved with Moved with Moved with 100-mL Water 200-mL Water 300-mL Water Bottle Bottle Bottle BE CAREFUL Wear safety goggles to protect your eyes. 1 Name 4 Glue your graph here. Name 1 14 Module Energy and Motion Lesson 1Energy and Speed 13 ELABORATE ELABORATE 3 Assist students in filling the water bottles. Demonstrate how to use the pan balance. 4 Emphasize the importance of using the same starting points for both the bottle and the cup each time. Explain that if these points are changed, more than one variable is being changed. 5 Record Data Demonstrate proper measurement for students. Students should measure from the cup’s starting point to the place where it comes to a rest. Have students record their data on page 14 in the Be a Scientist Notebook. Some students might have experienced trials where the water leaked from the bottle or bottles may have traveled off course, making data collection hard, or in some cases inaccurate. Explain to students that these are typical issues with investigations and this is why multiple trials are conducted. Another reason for multiple trials is measurements may be recorded incorrectly. 9 Research, Investigate, and Communicate Analyze Data Help students create a line graph using their data on a separate sheet of paper. They can glue the graph to page 14 of their Be a Scientist Notebook. The X axis is the mass of the bottle. The Y axis is the distance the cup moved. They should see that the larger mass caused the cup to travel a greater distance. Have students answer the questions on page 15 in the Be a Scientist Notebook. Talk About It Have students share their observations from the Mass Matters activity. ASK: ▸How did your results compare to your classmates? Sample answer: Most of my classmates had similar results. The more water in the bottle, the farther the bottle traveled. The bottle with more energy has more energy. ▸Did data collected change in each trial? Sample answer: For the most part the data collected was the same. Differentiated Instruction Approaching Level Have students explain why a brick has more potential energy than a piece of paper. On Level Have students create an anchor chart with sketches/images/labels to share what they have learned about potential and kinetic energy. Be a Scientist Notebook, p. 15 Name Date ELABORATE Communicate Information Beyond Level Have students explain the roles of potential and kinetic energy in the way a hammer works. 1. What evidence did you observe in your investigation to explain the relationship between kinetic energy and mass? Sample answer: Since the more massive bottle caused the cup to move the greatest distance it must have had the greatest kinetic energy. 2. Why was it important that the height of the ramp did not change? Sample answer: The height of the ramp controlled the speed of the bottle. The bottle needed to be moving at the same speed so that we knew the different masses caused the energy to change. 3. Construct an Explanation Does the data support your prediction? Explain. Copyright © McGraw-Hill Education Sample answer: The data did support my prediction. The bottle with the most mass moved the cup the farthest, showing that it had the most energy. Online Content at cconnectED.mcgraw-hill.com 14ModuleEnergy and Motion Lesson 1 Energy and Speed 15 EVALUATE EVALUATE EVALUATE Performance Task Performance Task Test Toy Cars Be an automotive engineer and perform tests on the toy car. You will investigate what happens when the amount of energy applied to the car changes. to r, t to b)©Tavis Wright/Image Source, all rights reserved., 2)Comstock Images/Alamy,(3)Ken Cavanagh/McGraw-Hill Education, 4)D. Hurst/Alamy,(5)Ken Karp/McGraw-Hill Education Make a Prediction You will use rubber bands to apply different amounts of energy. Predict which number of rubber bands will make the car move fastest, second fastest, and slowest. Performance Task Test Toy Cars 1 Demonstrate how to stretch the rubber band between the nails and mark the starting point. 3 Emphasize the importance of using the same starting point every time. Explain that if this point changes, more than one variable is being changed and the results will not be valid. 4 Record Data Demonstrate how to use and read the time on the stopwatch. Students should hit the start button at the same time their partner lets go of the car and should stop the timer when the entire car is completely across the finish line. Have students practice this several times to ensure consistency in their data collection. Have students record their data on page 17 in the Be a Scientist Notebook. 6 Remind students that although it may be harder to pull the toy car back when there are more rubber bands, it is critical that they pull back to the same starting point each time. 45 mins Materials safety goggles, masking tape, meterstick, 2 wooden blocks securely fastened with nails, rubber bands, toy car, stopwatch Purpose Students should conclude from their data that toy cars launched with more rubber bands will have more energy. Advanced Preparation Pound the nails into each end of the wooden block. As an alternative, students can use their fingers to hold the rubber band instead of blocks and nails. Safety Students should wear safety goggles during this activity. Make a Prediction Help students make a prediction. Remind them that a prediction is a statement of what they expect to observe in the future. Tell them to write their predictions on page 16 in the Be a Scientist Notebook. Then have students explain the prediction based on previous observations. Be a Scientist Notebook, p. 17 Be a Scientist Notebook, p. 16 EVALUATE Name Date Performance Task Name Test Toy Cars safety goggles Be an automotive engineer and perform tests on the toy car. You will investigate what happens when the amount of energy applied to the car changes. masking tape Make a Prediction You will use rubber bands to generate different amounts of energy. Predict which number of rubber bands will make the car move fastest, second fastest, and slowest. 2 wooden blocks with securely fastened nails Two Rubber Bands Three Rubber Bands EVALUATE Average Time Three Rubber Bands toy car 7 stopwatch Analyze Data Using the data collected, create a line graph showing the relationship between the number of rubber bands used and the average time needed for the car to travel 1.5 meters. Use a ruler if necessary to create straight lines. Label the X and Y axes and title the graph. Communicate Information Carry Out an Investigation 1. Construct an Explanation Do the data support your prediction? Why or why not? BE CAREFUL Wear safety goggles to protect your eyes. 1 Place a 12-inch strip of masking tape on a tile floor. This is the “starting line.” Hold the blocks with nails pushed in them on opposite ends of the tape. Stretch a rubber band between the nails. 2 Using masking tape, place a “finish line” on the floor 1.5 meters from the rubber band. 3 Pull a toy car back against the rubber band a few centimeters. Mark this starting point with a piece of tape and use it for the rest of the investigation. 4 Record Data Let go of the car. Have a partner use a stopwatch to time how long it takes for the car to cross the finish line. Record the data in the table. 5 Repeat this for two more runs. Then calculate the average time it took the car to reach the finish line. 6 Repeat steps 3 through 5 with 2 rubber bands and then with 3 rubber bands. Sample answer: The data collected support my predictions. One rubber band moved the car at the slowest speed. Three rubber bands moved the car at the fastest speed. Copyright © McGraw-Hill Education Copyright © McGraw-Hill Education Use evidence from an experiment to explain the relationship between en speed and energy. y. 16 Module Energy and Motion Online Content att Third Run Time Two Rubber Bands rubber bands slowest second fastest fastest Second Run Time One Rubber Band meterstick Prediction One Rubber Band Date First Run Time Materials Online Content at cconnectED.mcgraw-hill.com cconnectED.mcgraw-hill.com Glue your graph here. small groups Carry Out an Investigation Lesson 1 Energy and Speed 17 Lesson 1Energy and Speed 15 EVALUATE EVALUATE EVALUATE Performance Task Performance Task Crosscutting Concepts Patterns What patterns did you notice in the data you collected? Crosscutting Concepts Patterns If this is the first time you have taught the Crosscutting Concept of patterns, help students understand that patterns occur in the natural and human-made world. Students might recognize patterns in the data they have collected. ASK: ▸What patterns did you notice in the data you collected? Sample answer: The more rubber bands I used, the faster the car accelerated. Have students answer the questions on pages 17–18 in the Be a Scientist Notebook. ELL Support Display visual examples of patterns, such as images of patterned fabrics, patterns in nature, or patterns in architecture. Show students examples of numeric patterns as well. Point out the repeated patterns and say, A pattern has parts that repeat. Have students chorally repeat. Emerging Level Have students identify patterns in the classroom by pointing to them. Expanding Level Provide students with a sentence frame to help them identify patterns in the classroom: I see a pattern _____. Bridging Level Have students describe a pattern they have observed in the data from an investigation during this lesson. Talk About It In this activity, the rubber band transfers potential energy to the car to make it move from the start to the finish. ASK: ▸What kind of energy does the car have when it is moving? Sample answer: The car has mostly kinetic energy but still has potential energy. ▸What happens to the kinetic energy of the moving car when more rubber bands are added? The kinetic energy increases. ▸How does the car’s acceleration differ when using 1 rubber band versus 3 rubber bands? Sample answer: The car accelerates more when I use 3 rubber bands. ▸What can you infer about potential energy from this activity? Sample answer: The more potential energy that the rubber bands have, the more the car will accelerate as it moves. Be a Scientist Notebook, p. 18 EVALUATE Name Date Crosscutting Concepts Patterns 2. Did you notice a pattern in the data collected? Sample answer: There was a pattern in the data collected. As more rubber bands were used to make the car move, the time it took the car to move 1.5 meters became less. This pattern can be seen in the graph I created. 3. Use the evidence that you collected to explain the relationship between the speed and energy of the car. Sample answer: When more rubber bands were used, the energy pushing thecar increased. More energy increased the speed of the car. I know this because the time it took the car to travel 1.5 meters became less with each rubber band added. 18 Module Energy and Motion 16ModuleEnergy and Motion Copyright © McGraw-Hill Education 4. Infer what would happen if you used four rubber bands. Sample answer: I think that if I used four rubber bands, then the car would have even more speed. It would take even less time for the car to travel 1.5 meters. EVALUATE EVALUATE Essential Question Science and Engineering Practices I did construct explanations... Watch the Video and explain how the energy and speed of the race car are related. Essential Question How are energy and speed related? Have students refer to the answer they wrote to this question on page 6 in the Be a Scientist Notebook and see if and how their thinking has changed. Discuss and share their answers as a large group. Have students answer the Essential Question on page 19 in the Be a Scientist Notebook. eAssessment You might want to assign students the lesson test from eAssessment. You can assign the premade lesson test, which is based on the Disciplinary Core Ideas for the lesson, or you can customize a test using the customization tool. For additional help with eAssessment, please reference the “How To” guide under Assessment in the main menu at connectED.mcgraw-hill.com . Science and Engineering Practices I did construct explanations. Have students refer to the “I will…” and “I can…” statements on pages 6 and 12 in the Be a Scientist Notebook. ASK: ▸Have you used evidence to construct explanations related to speed and energy? If so, how? Sample answer: Yes, I explained how the marbles had more energy and went faster when the ramp was steeper. Help students record their “I did…” statement on page 19 of the Be a Scientist Notebook. Be a Scientist Notebook, p. 19 Name Date EVALUATE Essential Question How are energy and speed related? Think about the video of the race car at the beginning of the lesson. Explain how the energy and speed of the race car are related. Sample answer: When the race car is moving faster, it has more energy. When it is moving slower, it has less energy. Science and Engineering Practices Review the “I can . . .” statement you wrote arlier in the lesson. Explain what you have accomplished in this lesson by completing the “I did . . .” statement. Now that you’re done with the lesson, share re what you did!! Accept reasonable answers. Sample answer: I did use evidence to construct an explanation when I showed how the more massive bottle moved the cup farther. Copyright © McGraw-Hill Education I did Online Content at cconnectED.mcgraw-hill.com Online Content att Lesson 1 Energy and Speed 19 cconnectED.mcgraw-hill.com Lesson 1Energy and Speed 17 GLOSSARY A cone some seed plants reproduce with cones instead of flowers acceleration a change in velocity over time conservation the act of saving, protecting, or using resources wisely acid rain harmful rain caused by the burning of fossil fuels adaptation a trait that helps a living thing survive in its environment alternative energy source a source of energy other than the burning of a fossil fuel amplitude a measure that relates to the amount of energy in a sound wave avalanche a large, sudden movement of ice and snow down a hill or mountain constraint something that limits or restricts someone or something contact force force that results from the interaction of two objects in contact with each other continent a large landmass convection the transfer of thermal energy by flowing gases or liquid, such as the rising of warm air from a heater convex lens thicker in the middle, can make an object look larger B criteria standards on which a judgment or decision may be based binary code a system of representing a letter, digit, or other character using 0’s and 1’s D biomass plant and animal wastes that can be processed to make fuel deposition the dropping off of eroded soil and bits of rock biomass conversion the process of changing biomass into fuel design process a series of steps that engineers follow to come up with a solution to a problem brain organ in the nervous system that sends and receives messages from the other body organs earthquake a sudden shaking of the rock that makes up Earth’s crust C echo a repetition of a specific sound produced by reflection of sound waves from a surface echolocation the process of finding an object by using reflected sound central nervous system part of the nervous system made up of the brain and spinal cord electric current a flow of electricity through a conductor circuit a path through which electric current can flow electromagnet a magnet formed when electric current flows through wire wrapped in coils around an iron coding the process of writing a computer program in a language that can be used by a computer. concave lens thinner in the middle, always makes objects look smaller conduction the transfer of thermal energy between two objects that are touching conductor a material through which heat or electricity flows easily TR28Glossary electromagnetic spectrum a range of all light waves of varying wavelengths, including the visible spectrum energy the ability to do work energy transfer the movement of energy from one object to another or the change of energy from one form to another erosion the weathering and removal of rock or soil external structure structures that are found outside of an organism’s body F insulator a material that slows or stops the flow of energy, such as thermal energy, electricity, and sound fault a break or crack in the rocks of Earth’s crust where movements can take place internal structure structures that are found inside of an organism’s body flood a great flow of water over land that is usually dry force a push or a pull fossil any evidence of an organism that lived in the past fossil fuel a source of energy made from the remains of ancient, once-living things frequency the number of wavelengths that pass a reference point in a given amount of time K kinetic energy the energy an object has because it is moving L landform a physical feature on Earth’s surface G landslide the rapid movement of rocks and soil down a hill generator a device that produces alternating current by spinning an electric coil between the poles of a magnet; changes motion into electrical energy geothermal using the heat of the earth’s interior gravity a noncontact force that acts over a distance and pulls all objects toward each other M mass the amount of matter making up an object medium the substance through which a waves travels motion a change in an object’s position over time H N heat the movement of thermal energy from a warmer object to a cooler object hydroelectricity relating to production of electricity by waterpower natural resource something that is found in nature and is valuable to humans nervous system the set of organs that uses information from the senses to control all body systems noncontact force force that occurs without objects touching I image a “picture” of the light source that light rays make in bouncing off a polished, shiny surface nonrenewable resource a natural material or source of energy that is useful to people and cannot be replaced easily index fossil the remains of living things that were widespread, but lived during a relatively short part of Earth’s history O inertia the tendency of an object in motion to stay in motion or of an object at rest to stay at rest opaque completely blocking light from passing through Online Content att cconnectED.mcgraw-hill.com GlossaryTR29 P S peripheral nerve a nerve that is not part of the central nervous system and receives sensory information from cells in the body sediment the particles of soil or rock that may be eroded and deposited photon a tiny bundle of energy through which light travels photosynthesis the process of putting together carbon dioxide and water using energy from light pitch the highness or lowness of a sound as determined by its frequency plate tectonics a scientific theory that Earth’s crust is made of moving plates pollution any harmful substance that affects Earth’s land, air, and water sedimentary rock a rock that forms when small bits of matter are pressed together in layers seismic wave a vibration caused by an earthquake seismograph shows seismic waves as curvy lines along a graph seismometer an instrument that detects and records earthquakes sensory organ organs such as the skin, eyes, ears, nose, and tongue that gather information from outside the body potential energy the energy that is stored inside an object solar cell a device that uses light from the sun to produce electricity prototype an original or first model of something from which other forms are copied or developed solar power converting energy from the Sun into electrical power R radiation the transfer of energy through space reflection the bouncing of light waves off a surface reflex an action or movement of the body that happens automatically as a reaction to something refraction the bending of light as it passes from one transparent material into another renewable resource a useful material that is replaced quickly in nature replenish to refill, resupply, or to make complete again resistor an object in an electrical circuit that resists the flow of energy respiration the using and releasing of energy in a cell respiratory system the organ system that brings oxygen to body cells and removes waste gas sound energy a type of energy produced by vibrations of matter sound wave a wave that transfers energy through matter and spreads outward in all directions from a vibration speed the distance an object moves in an amount of time spinal cord a thick bundle of nerves inside the spine stimulus something in the environment that causes a living thing to respond stomata pores in the bottom of leaves that open and close to let in air or give off water vapor storm surge an abnormal rise of ocean water generated by a storm, over and above normal tides structural adaptation adjustments to internal or external body parts switch a device that can open or close a circuit T response a reaction to a stimulus thermal energy depends on the motion of tiny particles in matter; the faster the particles move the warmer a substance gets and the more thermal energy it has TR30Glossary topographical map a map that shows the elevation of an area of Earth’s surface using contour lines translucent letting only some light though so objects on the other side appear blurry transparent letting all the light through so objects on the other side can be seen clearly transpiration the release of water vapor through the stomata of a plant tropism a plant’s response to water, gravity, light, and touch tsunami a huge wave caused by an earthquake under the ocean V vegetation plants that cover a particular area velocity the speed and direction of an object visible spectrum the part of the electromagnetic spectrum made up of the colors of light humans can see volcano a mountain that builds up around an opening in Earth’s crust volume the loudness or softness of a sound W wavelength the distance from the top of one wave to the top of the next weathering the breaking down of rocks into smaller pieces Online Content att cconnectED.mcgraw-hill.com GlossaryTR31
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