Sample Pages from Discovering Science through Inquiry: Energy The following sample pages are included in this download: • Teacher’s Guide Cover, Table of Contents, How To Use This Product, and Lesson 4: Mechanical Energy lesson plan • Inquiry Handbook Cover and Lesson 4: Mechanical Energy student activity sheets • Inquiry Card for Lesson 4: Wrecking Ball Mayhem For correlations to Common Core and State Standards, please visit http://www.teachercreatedmaterials.com/correlations. www.tcmpub.com . 800.858.7339 . 5301 Oceanus Drive, Huntington Beach, CA 92649 Table of Contents Introduction and Research About Inquiry-based Learning . . . . . . . . 4 Inquiry-based Learning for the 21st Century . . . . . . . . . . . . . . . . . . . 4 Qualities of an Inquiry-based Classroom . . . . . . . . . . . . . . . . . . . . . 5 Making the Transition to Inquiry-based Instruction . . . . . . . . 6 Using the 5 Es in a Science Classroom . . . . . . . . . . . . . . . . . . . . . 7 Asking Good Questions . . . . . . . . . . . . 9 Teaching Scientific Vocabulary . . . . . 10 Differentiating Science Instruction . . . . . . . . . . . . . . . . . . . . 11 Using Technology in the Inquiry-based Classroom . . . . . . . . 14 Assessment . . . . . . . . . . . . . . . . . . . . . 15 How to Use This Product . . . . . . . . . . . . Why Use Discovering Science through Inquiry? . . . . . . . . . . . . . . . Teacher’s Guide . . . . . . . . . . . . . . . . . Inquiry Handbook . . . . . . . . . . . . . . . Inquiry Cards . . . . . . . . . . . . . . . . . . . Teacher Resource CD . . . . . . . . . . . . . Using the Video Clips . . . . . . . . . . . . . Sample Pacing Plans . . . . . . . . . . . . . 18 18 18 25 26 27 27 29 Standards Correlation . . . . . . . . . . . . . . 31 Content Overview . . . . . . . . . . . . . . . . . . 34 © Teacher Created Materials Lessons Lesson 1: What Is Energy? . . . . . . . . . 35 Lesson 2: Potential Energy . . . . . . . . 43 Lesson 3: Kinetic Energy . . . . . . . . . . 51 Lesson 4: Mechanical Energy . . . . . . 59 Lesson 5: Thermal Energy . . . . . . . . . 67 Lesson 6: Heat Transfer: Conduction . . . . . . . . . . . . . . . . . . . 75 Lesson 7: Heat Transfer: Convection . . . . . . . . . . . . . . . . . . . 83 Lesson 8: Heat Transfer: Radiation . 91 Lesson 9: Electrical Energy . . . . . . . . 99 Lesson 10: Chemical Energy . . . . . . 107 Lesson 11: Energy Transformations . . . . . . . . . . . . . . 115 Lesson 12: Renewable Energy Sources . . . . . . . . . . . . . . . . . . . . . . 123 Lesson 13: Wind Energy . . . . . . . . . . 131 Lesson 14: Solar Energy . . . . . . . . . . 139 Lesson 15: Light Energy . . . . . . . . . . 147 Lesson 16: Sound Energy . . . . . . . . . 155 Culminating Activity: Energy Expo . . . . 163 Appendices Appendix A: References Cited . . . . 167 Appendix B: Differentiation Suggestions . . . . . . . . . . . . . . . . . . 168 Appendix C: Contents of the Teacher Resource CD . . . . . . . . . . 174 #15534—Energy Teacher’s Guide 3 Introduction and Research How to Use This Product Why Use Discovering Science through Inquiry? This series was developed to provide teachers with an engaging and interesting way to present science concepts to students. In addition to providing students with rich, scientific experiences, teachers are provided with background and additional information about each topic covered within the kit so that they can provide accurate content-related instruction to students. Each kit focuses on a specific scientific concept and provides 16 lessons that support the instruction of that concept. This kit contains a Teacher Resource Guide, a Teacher Resource CD, an Inquiry Handbook, and 16 Inquiry Cards. The following pages provide specific information for how to use each of the components within the kit. Teacher’s Guide Lesson Overview Page Both content and process standards are identified for the lesson. A standards correlation chart (pages 32–33) lists these standards. Essential vocabulary words are identified and defined. Students will study these words throughout the course of the lesson. The Essential Question identifies the “big idea” covered in the lesson. By the end of the lesson, students should be able to clearly answer this question. 18 #15534—Energy Teacher’s Guide Lesson 1 What Is Energy? Standards Overview Content Standard Engage Understands the sources and properties of energy In this section, students are introduced to various forms and sources of energy. Each lesson is divided into the following sections: Engage, Explore, Explain, Elaborate, and Evaluate. This overview provides a brief synopsis of the activities that students will complete in each section of the lesson. Process Standard Knows that scientists’ explanations about what happens in the world come from observations and inferences Explore In this section, students research different sources of energy and create a visual representation of their findings. Vocabulary absorb: to take in (energy) energy: a source of usable power kinetic energy: the energy possessed by an object due to its motion Explain potential energy: the energy possessed by an object due to its position; stored energy In this section, students discuss forms of energy and sources of that energy in their everyday lives. ? Each title identifies the topic of study for the lesson. Elaborate In this section, students learn about the availability of energy sources. Essential Question What is energy and what are the different forms in which it exists? © Teacher Created Materials Evaluate In this section, students examine the Essential Question of the lesson and reflect on their learning. Students also take the What Is Energy? Assessment. #15534—Energy Teacher’s Guide 35 © Teacher Created Materials Introduction and Research How to Use This Product (cont.) Teacher’s Guide (cont.) Background Information Pages This page provides a written overview of the lesson topic. Use this information as a way to prepare for instruction and classroom discussion. Lesson 1 What Is Energy? Background Information for the Teacher Energy is a fundamental part of the universe. It is a source of usable power used to do work. It is used to light cities, as well as to power planes, trains, and automobiles. Energy is required to heat homes, power machinery, and cook food. Energy is not only found in these processes, but also in the objects themselves. When an object is at rest it has potential energy, or stored energy. When that resting object begins to move, the potential energy transforms into kinetic energy. Between the energy that objects possess and the energy found in processes, energy can be found all around us. In fact, there are many forms of energy. Some of which include: • Mechanical Energy: This is the energy objects have as a result of their motion and position. Simply put, potential energy plus kinetic energy equals mechanical energy. This is the energy that makes wheels turn and motors spin. • Solar Energy: This is energy from the sun that provides heat and light. Solar energy has become a popular alternative to other nonrenewable resources in recent years. • Thermal Energy: This is energy produced by heat. We use heat to keep warm. We use heat to cook food. • Chemical Energy: This is the energy stored in food, fuel, and other matter. Chemical energy is released and absorbed, or taken in, during chemical reactions, such as digestion. When we eat food, our bodies store the nutrients as chemical energy. Our bodies need this energy to move and do work. Chemical energy is also found in batteries. • Electrical Energy: When people think of energy, this is most often what comes to mind. Electrical energy powers many things in our homes and offices. It provides light, entertainment, and heat. Even a gas stove requires electrical energy! • Light Energy: This is the energy that allows us to see objects in a range of vibrant colors and shades. • Sound Energy: This is the energy that allows us to hear our favorite songs and babies crying. Waves of sound energy vibrate through rock concerts and movie theaters on a nightly basis. The Law of Conservation of Energy states that in any of these forms, energy cannot be created, nor can it be destroyed. Energy can only be transferred or transformed. Therefore, the sum of all the energy in a system is constant. For example, if a student is at a resting position on a swing and her potential energy equals twenty joules (units of energy), then her kinetic energy would equal zero joules. As she swings, her potential energy converts to kinetic energy and back again. At all points in the pendulum of her swing, her potential and kinetic energy will add up to twenty joules. Energy has not been created or destroyed. Lesson 1 Energy is everywhere. It is in our bodies, the earth, and even the sun. Energy is necessary for life, and at the same time, allows us to live comfortably. Without energy, life would not exist. What Is Energy? More to Know Additional Vocabulary Btu: abbreviation for British thermal unit; unit for heat in the imperial system joule: unit for heat in the International System of Measurements Measuring Energy 36 #15534—Energy Teacher’s Guide This page provides additional vocabulary and information that may be necessary for classroom discussion. This information is not intended to be directly taught to students, but can be shared with them if the need arises. In addition to vocabulary, this page may include interesting facts, data and statistics from around the world, helpful websites, and diagrams or photos to support the topic. Energy is measured using a few different methods. One of the basic measuring units is called for British thermal unit. One Btu is the amount of heat energy it takes to increase the temperature of one pound of water by one degree Fahrenheit, at sea level. One Btu is equal to the energy contained in one blue-tip kitchen match. The energy in one thousand Btus roughly equals the chemical energy in about four-fifths of a peanut butter and jelly sandwich or the energy burned during one hour of bicycling. a Btu, which stands © Teacher Created Materials Energy also can be measured in units called joules. The term joule is named after James Prescott Joule and is the unit for energy in the International System of Measurement. How are Btus and joules related? The approximate conversion between units is as follows: 1,055 joules = 1 Btu 1,000 joules = 1 kilojoule Energy to Burn If you eat a blueberry muffi n that has 360 calories, approximately 1,428 Btus, you have energy to burn! In order to burn that amou nt of energy you could: • jog for 21 minutes • bicycle for 1 hour 17 minutes • mow the lawn for about 1 hour • vacuum the house for 1 1 2 hours © Teacher Created Materials © Teacher Created Materials #15534—Energy Teacher’s Guide 37 #15534—Energy Teacher’s Guide 19 Introduction and Research How to Use This Product (cont.) Teacher’s Guide (cont.) Engage Activity This section of the lesson is always a demonstration or quick, engaging activity to be completed as a class. It will grab students’ attention and get them excited about the lesson. The materials are listed at the top of the page. Lesson 1 What Is Energy? Engage Materials • Sunimage(sun.jpg) • physicalexamplesof energy sources • Lightningimage (lightning.jpg) In this sec tion, students are introduced to various forms and sources of energy. This overview provides a brief synopsis of the activity that students will complete in this section of the lesson. Procedure 1. Write the word energy on the board. Ask students to think about what this word means to them. Ask them to think about where they have seen the word, what it means, and what they associate with the word. The procedure provides step-by-step instruction for completing the Engage activity with students. Appropriate organizational suggestions, leading questions, and instructional strategies are provided here. 2. Have students share their ideas with a neighbor and explain what it means. 3. Ask student volunteers to share their ideas with the rest of the class. Record their responses on a large sheet of chart paper. 4. When all volunteers have shared, look at the ideas as a group. Have students share what they think about other students’ responses and what they have learned from this discussion. 5. Explain to students that energy is a source of power used to do work. Tell students that they are going to look at examples of the sources of energy— things that have and transfer energy. 38 #15534—Energy Teacher’s Guide 6. Point to the Sun or hold up a picture of the Sun. Introduce the term solar energy and discuss how all other energy forms stem from solar energy. Hold up an apple, orange, or other fruit or vegetable. Ask students how solar energy is responsible for food growth. 7. Hold up a container of motor oil (preferably in clear plastic so students can see the oil). Petroleum products, similar to motor oil, are sources of chemical energy that are used to power motor vehicles and heat homes. 8. Hold up a lighter and light it. The flame represents thermal energy that is produced by heat. 9. Hold up a pinwheel and blow on it. Wind is a valuable energy source. 10. Hold up a lightbulb and a picture of lightning. Light energy is a very common source of energy. 11. As a class, discuss other possible sources of energy. Discuss what form of energy the source has and how that energy might change to another form. © Teacher Created Materials Technology Tips • If a video clip is used in this section of the lesson, that clip can be displayed on the computer or the interactive whiteboard. • Other video clips from this kit, your school library, or the Internet can also be shown here to further engage the students and activate their prior knowledge about the lesson concept. 20 #15534—Energy Teacher’s Guide © Teacher Created Materials Introduction and Research How to Use This Product (cont.) Teacher’s Guide (cont.) Explore Activity This section of the lesson provides students with the opportunity to explore the lesson concept by conducting an experiment or investigating a question. Lesson 1 The materials are listed at the top of the page. What Is Energy? Explore Materials • InquiryHandbook: Energy Quest (page 11) • booksonenergysources • Internetaccess(optional) • posterboard(oneper student) • markersorcoloredpencils In this sec tion, stude nts research dif fer of energy an ent sources d visual repres create a entation of their findin gs. Procedure The procedure provides step-by-step instruction for leading students through the Explore activity. Appropriate organizational suggestions, leading questions, and instructional strategies are provided here. 1. Write the following list of energy forms on the board: •mechanical •solar •electrical •light •sound •thermal •chemical 5. Students should then formulate hypotheses in response to the questions and conduct research related to their chosen energy source to determine if their hypotheses are correct. 2. As a class, discuss sources that might have or produce each form of energy. List these sources on the board as bubble maps for each form of energy. 6. After the research has been conducted, instruct students to illustrate their findings by creating a poster. Each student or group should include their hypotheses, overview of research, and conclusion on their poster. 3. Distribute copies of the Energy Quest activity sheet to students. Allow time for students to read through the instructions and ask any questions they may have. 7. Once posters have been created, have students or groups present their findings to the class. Each student or group should share his or her hypothesis, research, and conclusion. Note: A list of experiments is included on the Teacher Resource CD. 4. Instruct students to choose an object from home or school that uses or transfers energy. Students may work alone or in groups to research their chosen energy sources. Ensure that each student has chosen an energy source and that there is a variety amongst students. © Teacher Created Materials This overview provides a brief synopsis of the activity that will occur in this section of the lesson. #15534—Energy Teacher’s Guide 39 Technology Tips • Allow students to take digital pictures during the different stages of their experiments. These pictures can be made into classroom posters or posted online to document their findings. • Allow students to create a Microsoft PowerPoint® slide show to document their experiments. The slides can include information about their questions for investigation, hypotheses, experimental designs, observations, and conclusions. © Teacher Created Materials #15534—Energy Teacher’s Guide 21 Introduction and Research How to Use This Product (cont.) Teacher’s Guide (cont.) Explain Activity This section of the lesson involves explaining the information that students have been discovering within the Engage and Explore sections. Lesson 1 The materials are listed at the top of the page. What Is Energy? Explain Materials • InquiryHandbook: Energy Makes the World Go ‘Round (page 12) Energy in My Community (page 13) What Is Energy? Vocabulary (page 14) The procedure provides step-by-step instruction for leading students through the Explain activity. It includes appropriate organizational suggestions, leading questions, and instructional strategies to help students read the background information and complete the graphic organizer and vocabulary activity. In this sec tion, students dis cu forms of en ss ergy and source s of that energy in the ir everyday liv es. Procedure 1. Ask students to think about how energy affects their daily lives. Write the definition of energy on the board: a source of power used to do work. 2. Have a class discussion about forms and sources of energy. Review the energy sources students researched and discuss their findings. Did multiple sources use and transfer that same form of energy? Write the forms and sources of energy on the board. 3. Distribute copies of the Energy Makes the World Go ‘Round background page to students. Ask students to think about energy forms and sources in their own lives as they read the information. This overview provides a brief synopsis of the activity that students will complete in this section of the lesson. 5. Distribute copies of the Energy in My Community activity sheet to students. Allow time for students to complete the activity sheet in pairs. Students should use the background page to help complete the activity sheet. 6. Discuss the forms of energy and the sources of that energy that students found. 7. Distribute copies of the What Is Energy? Vocabulary page to students and allow time for them to complete it. Have students discuss possible answers with peers if they need help. 4. Discuss the forms and sources of energy that were mentioned in the text. Add any new information that is not already on the board. 40 #15534—Energy Teacher’s Guide © Teacher Created Materials Technology Tips • Use the PDFs from the Teacher Resource CD to project the student background information and activity sheets onto an interactive whiteboard. As a class, use text and/or image features of the interactive whiteboard to annotate and highlight the text and complete the activity sheets. • Use a document projector to display the student background information and the activity sheets. As a class, annotate and highlight the text and complete the activity sheets. 22 #15534—Energy Teacher’s Guide © Teacher Created Materials Introduction and Research How to Use This Product (cont.) Teacher’s Guide (cont.) Elaborate Activity This section of the lesson involves elaborating on the information that students have been learning throughout the lesson. Lesson 1 The materials are listed at the top of the page. What Is Energy? Elaborate In this sec tion, students lea rn the availabil about ity of energy sou rces. Materials • InquiryCard:SoManySources! • InquiryHandbook:SoManySources! (page 15) Using the Card The procedure provides step-by-step instruction for helping students analyze the information provided on the Inquiry Card. It also includes suggestions for how to help students complete the information found on the back of the card. 1. Display the So Many Sources! Inquiry Card and distribute copies of So Many Sources! from the Inquiry Handbook to students. 2. Tell students that the card shows examples of energy sources that are renewable and nonrenewable. Explain the difference between renewable and nonrenewable sources of energy. Discuss what students already know about these sources. 3. Read the background information to students and help them identify sources of energy in the home and school that are renewable and nonrenewable. Use the Inquiry Discussion Questions to further this discussion. 4. Use the differentiation suggestions for students to complete the Analyzing Science questions. 5. Allow students time to complete the Nonfiction and Fiction Writing Prompts and the Scientific Challenge. These activities can be completed in centers or workstations, if desired. Inquiry Discussion Questions • Whichenergysourceisinhighestdemand? Why do you think so? • Howaremostenergysourcesrelated? • Whatmustoccurtoincreasetheamount of solar, wind, and hydropower used for energy? Use these questions to facilitate inquiry‑based discussions about content related to the image, diagram, photo, chart, or map found on the Inquiry Card. Differentiation Above-Level Learners Have students complete the triangle Analyzing Science question. On-Level Learners Have students complete the square Analyzing Science question. Below-Level Learners Have students complete the circle Analyzing Science question. English Language Learners Explicitly link renewable and nonrenewable resources with students’ background experiences. Provide students with an outline to guide their research. Allow students to work in pairs or small groups. © Teacher Created Materials This overview provides a brief synopsis of the activity that students will complete in this section of the lesson. #15534—Energy Teacher’s Guide 41 Use the differentiation suggestions provided to help students complete the Analyzing Science questions on the back of the Inquiry Card. Technology Tips • Use the PDFs from the Teacher Resource CD to project the Inquiry Cards onto an interactive whiteboard. Use the text features of the interactive whiteboard to point out key features of the images, diagrams, or charts included on the cards. • Use a document projector to display the backs of the Inquiry Cards for the students. This will enable all students to see the information and complete the activities independently or during centers or workstations. • Have students use word processing or slideshow presentation software to record their responses for the Fiction and Nonfiction Writing Prompts and the Scientific Challenges. Students can then publish their work online. © Teacher Created Materials #15534—Energy Teacher’s Guide 23 Introduction and Research How to Use This Product (cont.) Teacher’s Guide (cont.) Evaluate Activity This section of the lesson allows students to reflect on their learning and their understanding of the lesson concepts. Students also take an assessment that provides the teacher with formal data documenting student understanding. Lesson 1 The materials are listed at the top of the page. What Is Energy? Evaluate Materials • InquiryHandbook: What Is Energy? Journal (page 16) What Is Energy? Assessment (pages 17–18) This section procedure provides step-by-step instruction for helping students discuss the Essential Question of the lesson. There are also procedures for utilizing the science journal pages and the assessment. This is the answer key for all of the student pages utilized throughout the course of the lesson. In this sec tion, stude nts examine the Essential Question of the reflect on the lesson and ir learning. Students als o take the Wh Is Energy? Assessment. at This overview provides a brief synopsis of the activity that students will complete in this section of the lesson. Procedure 1. Ask the class to reflect on what they have learned. Discuss the concepts and information that have been shared. 2. Discuss the Essential Question (page 35) of the lesson. Students should be able to articulate what energy is and share ideas about forms of energy and sources of that energy. 3. Distribute copies of the What Is Energy? Journal activity sheet to students and have them use it as a way to reflect on the lesson and synthesize the major concepts studied. This can also serve as a review for the final assessment. 4. Distribute copies of the What Is Energy? Assessment to the students and allow them adequate time to complete it. Answers for the assessment, as well as the other activity sheets used in this lesson, are provided below. Answer Key Energy Quest (Page 11) Posters and presentations will vary. What Is Energy? Journal (page 16) Responses and illustrations will vary. Energy in My Community (page 13) Responses will vary. Possible answers include: solar, electrical, thermal, chemical, sound, heat, light, sun, and food. What Is Energy? Assessment (pages 17–18) 1. C 2. A 3. D 4. D 5. C Open Response What Is Energy? Vocabulary (page 14) 1. potential energy 2. absorb 3. energy 4. kinetic energy Illustrations will vary. 42 #15534—Energy Teacher’s Guide Responses will vary. © Teacher Created Materials Technology Tip Use an interactive whiteboard or document camera to display the journal pages. Have a class discussion about the topic of the lesson and generate a class journal using the functions of an interactive whiteboard. Or, record a class journal under the document camera. As a class, annotate and highlight the text and complete the activity sheets. 24 #15534—Energy Teacher’s Guide © Teacher Created Materials Introduction and Research How to Use This Product (cont.) Inquiry Handbook The Inquiry Handbook contains all of the student pages that are used throughout the kit. Directions on how to use the student pages with each lesson are found in the Teacher’s Guide. Each lesson includes the following pages: Lesson 1 Lesson 1 Name: ___________________________________ Date: ________________ What Is Energy? What Is Energy? Vocabulary Energy Makes the World Go ‘Round Energy in My Community Directions: Follow the steps below to answer the questions. Formulate your hypotheses and complete your research. Use the materials your teacher has provided. Record your observations and draw your conclusions. Present your research on a separate sheet of paper. Energy is a source of usable power used to do work. Work is done when one object transfers energy to another object. When an object is at rest it has potential energy, or stored energy. When an object that is standing still begins to move it has kinetic energy, or energy of motion. These are not the only forms of energy, however. Energy is all around us. Directions: Look at the picture below. Circle the different energy forms and sources. Then, list all of the forms and sources of energy you found. Hypotheses Word Box absorb 2. 3. • Mechanical Energy: This is the energy objects have because of their motion or position. This is the energy that makes wheels turn and motors spin. • Solar Energy: This is energy from the Sun. This form of energy provides heat and light. Exploring the Research 1. Research the questions above using the Internet, school library, or books your teacher has provided you. Write down the sources where you find your information. 2. Choose an object that either uses or produces energy. 3. Create a poster that includes your hypotheses, observations, conclusion, and answers the following questions: • Whydidyouchoosethisobject? energy kinetic energy Vocabulary Word or Phrase 1. There are many forms of energy, such as the following: Formulate your hypotheses. (What are the answers to the questions?) Record your hypotheses. 4. • Thermal Energy: This is energy produced by heat. We use heat to keep warm. We use heat to cook food. The food we eat helps our bodies stay warm. potential energy Definition the energy possessed by an object due to its position; stored energy to take in (energy) a source of usable power the energy possessed by an object due to its motion Directions: Illustrate each vocabulary word or phrase in the space provided. Energy Forms and Sources • Chemical Energy: This is the energy stored in food, fuel, and other matter. When we eat food, our bodies store the nutrients as chemical energy. Our bodies need this energy to move and do work. This type of energy is also found in batteries. Forms of Energy Source Forms of Energy absorb energy kinetic energy potential energy Source • Electrical Energy: This energy powers many things in our homes. It provides light at night. It can heat our stoves. It also powers toys. • Whatformofenergydoesithave? • Canyourobject’senergychangetoadifferentformofenergy? Describe that change. • Light Energy: This energy travels in waves and allows us to see. • Sound Energy: This energy travels in waves and allows us to hear. 4. Present your poster to the class. 5. Demonstrateyourobject’schangeinenergytoyourclass. The Law of Conservation of Energy says that energy cannot be created or destroyed. Energy can only be changed. It changes from one form to another. For example, plants can absorb, or take in, energy from the Sun. They use this energy to create sugars. When plants do this, they are changing solar energy into chemical energy. Another change occurs when you turn on the lights in your classroom. You are changing electrical energy into light energy. These changes happen all around us. Observations What interesting facts did you discover during your research? Conclusion Energy is everywhere. It is in our bodies. It is in the earth. It is even in the Sun. Energy is necessary for life. It helps us live more comfortably. It is everywhere. What are the answers to your questions? Write your conclusions. What did you learn from your research? #13657—Energy Inquiry Handbook Directions: Write the vocabulary word or phrase next to its definition. Choose words from the Word Box below. Energy makes planes fly, cars move, and machines run. It lights our homes and buildings. Energy powers our computers and other appliances we use every day. Plants and animals need energy to grow. Energy in food helps your brain function and your body move. Where do you see energy in the world around you? How is it used? © Teacher Created Materials What Is Energy? What Is Energy? Energy Quest Questions Lesson 1 Name: ___________________________________ Date: ________________ Lesson 1 Name: ___________________________________ Date: ________________ What Is Energy? 11 experiment designing page 12 #13657—Energy Inquiry Handbook © Teacher Created Materials © Teacher Created Materials background information (4.0–4.9 reading level) Lesson 1 What Is Energy? So Many Sources! Lesson 1 Name: ___________________________________ Date: ________________ Lesson 1 Name: ___________________________________ Date: ________________ What Is Energy? What Is Energy? Assessment Multiple Choice Directions: Write a question you have about energy here. Question: What did you learn from your research about energy? Directions: Fill in the bubble next to the correct answer for each question below. _______________________________ _______________________________ _______________________________ _______________________________ Finish this sentence about energy. _______________________________ I am surprised that _______________ _______________________________ _______________________________ _______________________________ _______________________________ _______________________________ _______________________________ _______________________________ _______________________________. _______________________________ Energy Vocabulary Drawings and Illustrations Directions: Write any new words related to the term energy here. Directions: Draw an example of a source of energy in your classroom. Include your vocabulary terms in your drawing. 2. Energy cannot be ___________ or ____________. A created, destroyed B stretched, compressed C shrunk, enlarged D potential, kinetic 3. What is energy used to do? A turn on a light B go down a slide C heat water D all of the above Comprehension All Out of Energy Buzz!Jarrett’salarmwokehim.Hewassotired!Allhewantedwasahealthy breakfast. Jarrett dragged himself to the kitchen and opened the cabinet. It was empty! He wondered where the food had gone. Jarrett decided he would makehimselfhotteainstead.Butthestovewouldn’twork.Thingsdidnotseem normal. Jarrett raced outside. The sun was not up. Jarrett hopped on his bike. But the wheels would not turn. What was going on? The world had lost all of its energy! Jarrett started to panic. Suddenly he heard a buzzing sound. He sat up in bed. It had been a nightmare. Jarrett happily enjoyed a morning full of energy. ______________________ ______________________ ______________________ #13657—Energy Inquiry Handbook 1. All of the following are forms of energy EXCEPT: A mechanical energy. B chemical energy. C genetic energy. D thermal energy. Directions: Read the paragraph below. Then answer questions 4 and 5 on the following page. Fill in the bubble next to the correct answer for each question. ______________________ 16 © Teacher Created Materials vocabularydevelopment activity Thinking About Energy ______________________ front of the Inquiry Card #13657—Energy Inquiry Handbook Questions and Notes ______________________ 15 14 What Is Energy? What Is Energy? Journal #13657—Energy Inquiry Handbook 13 graphic organizer ______________________ © Teacher Created Materials #13657—Energy Inquiry Handbook © Teacher Created Materials science journal page © Teacher Created Materials #13657—Energy Inquiry Handbook 17 assessment Digital versions of these pages are included on the Teacher Resource CD. Additional copies of the background information page are also included. These copies are written at various reading levels to support the needs of all learners. (See page 27 for reading-level ranges of the alternate background information pages. See page 176 for specific TCM reading levels of each passage.) © Teacher Created Materials #15534—Energy Teacher’s Guide 25 Introduction and Research How to Use This Product (cont.) Inquiry Cards The front of the card contains photos, charts, diagrams, images, or maps pertaining to the topic studied in the lesson. Background information is for the information found on the front of the card. The Analyzing Science section provides differentiated questions to help the students analyze the information on the card at a level that is appropriate for them. Differentiation suggestions for this section of the card are provided in the Elaborate section of the lesson. The Nonfiction Writing Prompt provides students with a scenario to research or investigate that directly pertains to the information on the Inquiry Card. Students can complete this activity individually, in pairs, in small groups, or in centers or workstations. 26 #15534—Energy Teacher’s Guide The Fiction Writing Prompt provides students with a creative scenario that relates to the information on the Inquiry Card. Here, students are invited to use their imaginations and creativity to write things like stories, poems, journals, and comics. The Scientific Challenge provides students with an extension activity related to the information provided on the Inquiry Card. Often this activity invites students to complete additional research and investigate related ideas. © Teacher Created Materials Introduction and Research How to Use This Product (cont.) Teacher Resource CD The Teacher Resource CD includes the following types of resources: • pre-/post-test • student reproducible pages • digital copies of both sides of the Inquiry Cards • alternative versions of the student background information pages written at additional reading levels: 2.0–2.4, 2.5–3.4, and 6.5–7.4 • video clips to help engage students or supplement their understanding of the scientific concepts being studied Using the Video Clips There are eight video clips included in this kit. They are located on the Teacher Resource CD and can be shown as the teacher deems necessary throughout the lessons included in the kit. Depending on the available technology, these clips can be shown on the computer or the interactive whiteboard. These clips can also be placed in slideshow presentation software. Each clip is saved as an .mov or a .gif file. These files can be shown using QuickTime® Player. A Read Me file is included in the video clips folder that provides instructions for downloading a free version of QuickTime® Player. It is recommended that you download these clips to your hard drive instead of playing them from the Teacher Resource CD. This will allow the clips to run as smoothly as possible. Below are the filenames and a brief description of each clip. NASA Now: Green Biofuel (greenbiofuel.mov) This video provides a great overview of the characteristics of green energy sources. It also shows how the next generation of biofuels is being generated. Water Slide (waterslide.mov) This clip shows the relationship between the potential and kinetic energy of water park enthusiasts. Students will observe potential energy as the sliders sit at the top of the water slide. Then, students will see the potential energy convert to kinetic energy as the sliders push off to start their rides. Video Credits: greenbiofuel.mov, NASA; waterslide.mov, Shutterstock © Teacher Created Materials #15534—Energy Teacher’s Guide 27 Introduction and Research How to Use This Product (cont.) Using the Video Clips (cont.) Bike (bike.mov) This clip shows how the parts of a bicycle work together in a system to transfer kinetic energy to help a bicycle move. Thermal Camera (thermalcamera.mov) A thermal imaging camera displays the thermal energy of a man. Lightning Bug (lightningbug.mov) This clip shows a close-up look of the night-life behaviors of a lightning bug. Water Wheel (waterwheel.mov) This clip shows a bamboo water wheel that is using water to power an irrigation system in Vietnam. NASA’s Real World Mathematics: Solar Power (solarpower.mov) This video takes students behind the scenes at the Solar Decathlon to explore the benefits of solar energy. It provides an explanation of photovoltaic cells and how “conventional systems can be used to create an unconventional house.” NASA Kids Science News Network: What Is Sound? (sound.mov) This video explains and demonstrates how vibrations and sound energy are related. Video Credits: bike.mov, Shutterstock; thermalcamera.mov, Shutterstock; lightningbug.mov, Shutterstock; waterwheel.mov, Shutterstock; solarpower.mov, NASA; sound.mov, NASA 28 #15534—Energy Teacher’s Guide © Teacher Created Materials Introduction and Research How to Use This Product (cont.) Sample Pacing Plans When designing a pacing plan for your classroom, it is important to consult the standards for your grade level to see which lessons are most appropriate in helping you meet those expectations. Additionally, you must take into consideration the readiness levels of your students and their understanding of the scientific concepts that must be taught. Administer the diagnostic pre-test to decide which lessons need to be taught most. The following are sample pacing plans for the lessons included in this kit. Sample Pacing Plan for Two-Hour Daily Science Block Monday Tuesday Wednesday Thursday Friday Lesson 1: What Is Energy? Lesson 2: Potential Energy Lesson 3: Kinetic Energy Lesson 4: Mechanical Energy Lesson 5: Thermal Energy Lesson 6: Heat Transfer: Conduction Lesson 7: Heat Transfer: Convection Lesson 8: Heat Transfer: Radiation Lesson 9: Electrical Energy Lesson 10: Chemical Energy Lesson 11: Energy Transformations Lesson 12: Renewable Energy Sources Lesson 13: Wind Energy Lesson 14: Solar Energy Lesson 15: Light Energy Lesson 16: Sound Energy Culminating Activity: Energy Expo Culminating Activity: Energy Expo © Teacher Created Materials #15534—Energy Teacher’s Guide 29 Introduction and Research How to Use This Product (cont.) Sample Pacing Plans (cont.) Sample Pacing Plan for One-Hour Daily Science Block Monday 30 Tuesday Wednesday Thursday Friday Lesson 1: What Is Energy? (Engage, Explore, and begin Explain) Lesson 1: What Is Energy? (finish Explain, Elaborate, and Evaluate) Lesson 2: Potential Energy (Engage, Explore, and begin Explain) Lesson 2: Potential Energy (finish Explain, Elaborate, and Evaluate) Lesson 3: Kinetic Energy (Engage, Explore, and begin Explain) Lesson 3: Kinetic Energy (finish Explain, Elaborate, and Evaluate) Lesson 4: Mechanical Energy (Engage, Explore, and begin Explain) Lesson 4: Mechanical Energy (finish Explain, Elaborate, and Evaluate) Lesson 5: Thermal Energy (Engage, Explore, and begin Explain) Lesson 5: Thermal Energy (finish Explain, Elaborate, and Evaluate) Lesson 6: Heat Transfer: Conduction (Engage, Explore, and begin Explain) Lesson 6: Heat Transfer: Conduction (finish Explain, Elaborate, and Evaluate) Lesson 7: Heat Transfer: Convection (Engage, Explore, and begin Explain) Lesson 7: Heat Transfer: Convection (finish Explain, Elaborate, and Evaluate) Lesson 8: Heat Transfer: Radiation (Engage, Explore, and begin Explain) Lesson 8: Heat Transfer: Radiation (finish Explain, Elaborate, and Evaluate) Lesson 9: Electrical Energy (Engage, Explore, and begin Explain) Lesson 9: Electrical Energy (finish Explain, Elaborate, and Evaluate) Lesson 10: Chemical Energy (Engage, Explore, and begin Explain) Lesson 10: Chemical Energy (finish Explain, Elaborate, and Evaluate) Lesson 11: Energy Transformations (Engage, Explore, and begin Explain) Lesson 11: Energy Transformations (finish Explain, Elaborate, and Evaluate) Lesson 12: Renewable Energy Sources (Engage, Explore, and begin Explain) Lesson 12: Renewable Energy Sources (finish Explain, Elaborate, and Evaluate) Lesson 13: Wind Energy (Engage, Explore, and begin Explain) Lesson 13: Wind Energy (finish Explain, Elaborate, and Evaluate) Lesson 14: Solar Energy (Engage, Explore, and begin Explain) Lesson 14: Solar Energy (finish Explain, Elaborate, and Evaluate) Lesson 15: Light Energy (Engage, Explore, and begin Explain) Lesson 15: Light Energy (finish Explain, Elaborate, and Evaluate) Lesson 16: Sound Energy (Engage, Explore, and begin Explain) Lesson 16: Sound Energy (finish Explain, Elaborate, and Evaluate) Culminating Activity: Energy Expo Culminating Activity: Energy Expo Culminating Activity: Energy Expo #15534—Energy Teacher’s Guide © Teacher Created Materials Lesson 4 Mechanical Energy Standards Overview Content Standard Engage Knows that heat is often produced as a byproduct when one form of energy is converted to another form In this section, students watch a video and participate in a discussion about mechanical energy. Process Standard Knows that although the same scientific investigation may give slightly different results when it is carried out by different persons, or at different times or places, the general evidence collected from the investigation should be replicable by others Vocabulary mechanical energy: the energy objects have because of their motion and position pull: a force applied by an object that draws another object towards it Explore In this section, students demonstrate how hills affect the mechanical energy of a roller coaster. Explain In this section, students learn about mechanical energy transfers and the work that results. push: a force applied by an object that repels another object away from it ? work: when one object transfers energy to another, causing the second object to move Essential Question How is mechanical energy related to the work done by an object? © Teacher Created Materials Elaborate In this section, students discover the relationship between mechanical energy and the destructive power of a wrecking ball. Evaluate In this section, students examine the Essential Question of the lesson and reflect on their learning. Students also take the Mechanical Energy Assessment. #15534—Energy Teacher’s Guide 59 Lesson 4 Mechanical Energy Background Information for the Teacher An airplane flies through the clouds. A pitcher throws a baseball. A hammer drives a nail into a piece of wood. In each of these scenarios, potential and kinetic energy combine in a system that does work. This is called mechanical energy. Mechanical energy is the energy objects have because of their motion or position. Work is done on an object when one object transfers energy to another object, causing the second object to move. The first object exerts a force that causes the second object to move. That force could be a twist, turn, pull, push, or throw. A push is a force applied by y kin eti c e rg ne force (push) work is done mechanical energy at work 60 #15534—Energy Teacher’s Guide an object that repels another object away from it. A pull is a force applied by an object that draws another object towards it. For example, mechanical energy allows a hammer to apply force to a nail. The force of the hammer causes the nail to move and be driven into a piece of wood. Because the hammer has mechanical energy in the form of kinetic energy, it is able to do work on nails. We are able to see examples of mechanical energy in many of our everyday actions. This includes riding the bus to school and riding a roller coaster. Mechanical energy can also be seen in more complicated systems. A bicycle is composed of a variety of parts, each of which has its own potential energy. The pedals, chains, gears, and wheels all possess potential energy. When an outside force, such as a person pushing a pedal, acts on one object in the system, that potential energy is converted into kinetic energy. As the pedal turns, the kinetic energy transfers to the chain and gears, causing them to turn. It is in this transfer that work is done and mechanical energy can be seen. Work continues to be done as the chain and gears transfer kinetic energy to the wheels, causing them to spin, sending the bike speeding down the road. Mechanical energy is one of energy’s most basic forms. It is often converted into other useful forms, such as electrical energy and thermal energy. Often, mechanical energy produces heat in addition to other forms of energy. When this heat is not used to do work, it is called waste heat. These energy conversions can be seen in systems as complicated as a hydroelectric power plant or as everyday as a matchstick. As long as there is work being done, you will know mechanical energy is there. Mechanical energy keeps things moving. © Teacher Created Materials Lesson 4 Mechanical Energy More to Know Additional Vocabulary entropy: a measure of the energy that is not available for work during a thermodynamic process thermodynamics: the study of the connection between heat and work and the conversion of one into the other Thermodynamics Thermodynamics is the study of the connection between heat and work and the conversion of one into the other. Two major laws govern this study: 1.The First Law of Thermodynamics is the Law of the Conservation of Energy. This law states that energy cannot be created or destroyed, only converted from one form into another. 2.The Second Law of Thermodynamics states: •Although energy cannot be created or destroyed, some energy in a conversion may not be used to do work—it is wasted. For instance, you may notice that your laptop computer emits heat after you have used it for a while. The computer is not using that heat energy to do any work—it is wasted heat. •Heat will normally flow from areas of high temperature to areas of low temperature. •A system that is closed, preventing new energy from being introduced, will eventually reach a state of maximum entropy in which all energy is lost as heat and no energy is available to do work. Examples of Thermo dynamic Systems • greenho use • car eng ine • refrigera tor • compute r • video g ame system © Teacher Created Materials #15534—Energy Teacher’s Guide 61 Lesson 4 Mechanical Energy Engage Materials • paper • pencil • Bike video clip (bike.mov) In this sec tion, students w atch a video and participate in a discussion about mechanical energy. Procedure 1.Ask students to take out a piece of paper and a pencil. Explain that they will be shown a short video clip. 2.Show the Bike video clip found on the Teacher Resource CD. Explain to students that they will watch this video clip twice. The first time, they will watch and observe, and the second time, they will record their observations on a sheet of paper. 7.Show the video a third time. Narrate over the video and point out how the parts of the bicycle work together in a system to transfer kinetic energy and help the bicycle wheels spin. 8.Ask students if they can think of other systems of moving parts that use mechanical energy. 3.Show the video clip a second time and allow students to record their observations during this showing. 4.Have students discuss their observations with partners and compare their notes. Instruct them to identify all the forms of energy that were in the video and the source of each energy form. 5.Discuss student observations and make a class chart of the forms and sources of energy. 6.Tell students that the video shows a bicycle that is using mechanical energy. On the board, write the definition of mechanical energy: the energy objects have because of their motion and position. 62 #15534—Energy Teacher’s Guide © Teacher Created Materials Lesson 4 Mechanical Energy Explore Materials • Inquiry Handbook: Marble Roller Coaster (page 35) • 1 45 m (6 ft.) section of 3 45 cm (1 12 in.) diameter foam pipe insulation • utility knife • masking tape • meter stick • 1 marble In this sec tion students de , monstrate how hills a ffect the mechanical en a roller coa ergy of ster. Procedure 1.Before the lesson, cut the foam pipe insulation in half (the long way) to make U-shaped channels. Each student group will receive two U-shaped channels. 6.Divide the class into small groups and distribute a set of materials to each group. 2.Discuss mechanical energy. Ask students to recall how potential and kinetic energy combined to form mechanical energy and do work in the video clip from the Engage activity. 7.Ask students to complete their hypotheses and allow them time to conduct the experiment. Remind students to carefully record their observations and then use the observations to formulate a conclusion. 3.Tell students that they are going to conduct an experiment to test how hills affect the mechanical energy of a roller coaster and its ability to send an object through a loop—its ability to do work. 8.Compare group results. Ask students if a general pattern still exists even though individual results may not be identical. Ask students to write a conclusion based on their findings. 4.Distribute copies of the Marble Roller Coaster activity sheet to students. Have students read the activity sheet. Answer any questions students may have. 5.Display the materials that students will use in the experiment. Discuss as a class what each material is and how it is used. © Teacher Created Materials #15534—Energy Teacher’s Guide 63 Lesson 4 Mechanical Energy Explain Materials • Inquiry Handbook: Moving, Moving, Moving (page 36) Let the Mechanical Energy Flow (page 37) Mechanical Energy Vocabulary (page 38) • chart paper • highlighter In this sec tion, students learn abou t mechanical energy tran sfe and the wo rs rk that results . Procedure 1.Write the definition of mechanical energy on the board. Ask students to recall the Engage and Explore activities and how those activities demonstrated mechanical energy. 6.Distribute copies of the Let the Mechanical Energy Flow activity sheet to students. Have students work in small groups to list three examples of how mechanical energy is used to do work. 2.Distribute copies of the Moving, Moving, Moving background page to students. Tell students that the background information gives everyday examples of mechanical energy. 7.Have groups share their ideas and add ideas to a class chart. Highlight energy transfers that result in thermodynamic heat loss. 3.Have students read the background information. It can be read as a whole class, independently, in pairs, or in small groups. Ask students to look for examples of mechanical energy in the passage. 8.Distribute copies of the Mechanical Energy Vocabulary activity sheet to students. Allow time for students to complete it and discuss possible answers with peers. 4.As a class, discuss the examples of mechanical energy provided in the text. 5.Ask students to brainstorm mechanical systems that make waste heat. Record student ideas on the board. 64 #15534—Energy Teacher’s Guide © Teacher Created Materials Lesson 4 Mechanical Energy Elaborate Materials • Inquiry Card: Wrecking Ball Mayhem • Inquiry Handbook: Wrecking Ball Mayhem (page 39) In this sec tion, stude nts discover th e relationsh ip between m echanical e nergy and the de stru of a wreckin ctive power g ball. Using the Card Inquiry Discussion Questions 1.Display the Wrecking Ball Mayhem Inquiry Card and distribute copies of Wrecking Ball Mayhem from the Inquiry Handbook to students. • How is mechanical energy demonstrated with a wrecking ball? • At what point(s) is the mechanical potential energy the greatest? • What other devices work like a wrecking ball? 2.Have students review the picture independently. Then, ask them to discuss the operation of a wrecking ball and its relationship to mechanical energy. 3.Read the background information to students and help them identify the potential energy of the wrecking ball that makes its mechanical energy possible. Use the Inquiry Discussion Questions to further this discussion. 4.Use the differentiation suggestions for students to complete the Analyzing Science questions. 5.Allow students time to complete the Nonfiction and Fiction Writing Prompts and the Scientific Challenge. These activities can be completed in centers or workstations, if desired. Differentiation Above-Level Learners Have students complete the triangle Analyzing Science question. On-Level Learners Have students complete the square Analyzing Science question. Below-Level Learners Have students complete the circle Analyzing Science question. English Language Learners Use visuals and physical examples, such as a pencil sharpener, to demonstrate mechanical energy. Explicitly link mechanical energy to kinetic and potential energy. Provide students with an outline to help guide their research. © Teacher Created Materials #15534—Energy Teacher’s Guide 65 Lesson 4 Mechanical Energy Evaluate Materials • Inquiry Handbook: Mechanical Energy Journal (page 40) Mechanical Energy Assessment (pages 41–42) In this sec tion, stude nts examine th e Essential Question o f th reflect on th e lesson and eir learning . Students als o take the Mechan ica Assessment. l Energy Procedure 1.Ask the class to reflect on what they have learned. Discuss the concepts and information that have been shared. 2.Discuss the Essential Question (page 59) of the lesson. Students should be able to articulate the properties of mechanical energy and how it allows a system of objects to do work. 3.Distribute copies of the Mechanical Energy Journal activity sheet to students and have them use it to reflect on the lesson and synthesize the major concepts studied. This can also serve as a review for the final assessment. 4.Distribute copies of the Mechanical Energy Assessment to students and allow them adequate time to complete it. Answers for the assessment, as well as the other activity sheets used in this lesson, are provided below. Answer Key Marble Roller Coaster (page 35) Students should conclude that hills increase the mechanical energy of a roller coaster. 66 Mechanical Energy Journal (page 40) Responses and illustrations will vary. Let the Mechanical Energy Flow (page 37) 1.hand; pull; door; door opens 2.bowling ball; push; pin; pin falls 3.wrecking ball; push; building; building falls Mechanical Energy Assessment (pages 41–42) 1.B 2.C 3.D 4.B 5.B Mechanical Energy Vocabulary (page 38) 3.mechanical energy 1.push 4.work 2.pull Open Response Responses will vary. #15534—Energy Teacher’s Guide © Teacher Created Materials Table of Contents Diagnostic Pre-test . . . . . . . . . . . . . . . 5 Lesson 1: What Is Energy? Energy Quest . . . . . . . . . . . . . . . . . . . . . . . 11 Energy Makes the World Go ‘Round . . . . . 12 Energy in My Community . . . . . . . . . . . . . 13 What Is Energy? Vocabulary . . . . . . . . . . . 14 So Many Sources! . . . . . . . . . . . . . . . . . . . . 15 What Is Energy? Journal . . . . . . . . . . . . . . . 16 What Is Energy? Assessment . . . . . . . . . . . 17 Lesson 2: Potential Energy Launching to New Heights . . . . . . . . . . . . . 19 Real World Potential Energy . . . . . . . . . . . 20 Everyday Potential Energy . . . . . . . . . . . . 21 Potential Energy Vocabulary . . . . . . . . . . . 22 Feel the Potential! . . . . . . . . . . . . . . . . . . . . 23 Potential Energy Journal . . . . . . . . . . . . . . 24 Potential Energy Assessment . . . . . . . . . . 25 Lesson 3: Kinetic Energy Kinetic Competition . . . . . . . . . . . . . . . . . . 27 Energy on the Move! . . . . . . . . . . . . . . . . . . 28 Understanding Kinetic Energy . . . . . . . . . 29 Kinetic Energy Vocabulary . . . . . . . . . . . . 30 Kinetic Energy in Sports . . . . . . . . . . . . . . 31 Kinetic Energy Journal . . . . . . . . . . . . . . . . 32 Kinetic Energy Assessment . . . . . . . . . . . . 33 Lesson 4: Mechanical Energy Marble Roller Coaster . . . . . . . . . . . . . . . . 35 Moving, Moving, Moving . . . . . . . . . . . . . . 36 Let the Mechanical Energy Flow . . . . . . . . 37 Mechanical Energy Vocabulary . . . . . . . . . 38 Wrecking Ball Mayhem . . . . . . . . . . . . . . . . 39 Mechanical Energy Journal . . . . . . . . . . . . 40 Mechanical Energy Assessment . . . . . . . . 41 © Teacher Created Materials Lesson 5: Thermal Energy Moving Molecules . . . . . . . . . . . . . . . . . . . . 43 Heat It Up, Cool It Down . . . . . . . . . . . . . . . 44 Thermal Energy in Action . . . . . . . . . . . . . 45 Thermal Energy Vocabulary . . . . . . . . . . . 46 Geothermal Generators . . . . . . . . . . . . . . . 47 Thermal Energy Journal . . . . . . . . . . . . . . . 48 Thermal Energy Assessment . . . . . . . . . . . 49 Lesson 6: Heat Transfer: Conduction Hot Stuff . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Transferring Heat . . . . . . . . . . . . . . . . . . . . 52 Controlling the Heat . . . . . . . . . . . . . . . . . . 53 Heat Transfer: Conduction Vocabulary . . . . . . . . . . . . . . . . . . . . . 54 The Vacuum Flask . . . . . . . . . . . . . . . . . . . . 55 Heat Transfer: Conduction Journal . . . . . 56 Heat Transfer: Conduction Assessment . 57 Lesson 7: Heat Transfer: Convection Convection Snake . . . . . . . . . . . . . . . . . . . . 59 Moving Heat Through Currents . . . . . . . . 60 An Ongoing Cycle . . . . . . . . . . . . . . . . . . . . 61 Heat Transfer: Convection Vocabulary . . 62 Convection and Extreme Weather . . . . . . 63 Heat Transfer: Convection Journal . . . . . . 64 Heat Transfer: Convection Assessment . . 65 Lesson 8: Heat Transfer: Radiation Radiation Simulation . . . . . . . . . . . . . . . . . 67 Heat Wave . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Facts About Radiation . . . . . . . . . . . . . . . . 69 Heat Transfer: Radiation Vocabulary . . . . 70 Thermal Imaging . . . . . . . . . . . . . . . . . . . . . 71 Heat Transfer: Radiation Journal . . . . . . . 72 Heat Transfer: Radiation Assessment . . . 73 #13657—Energy Inquiry Handbook 3 Lesson 4 Name:____________________________________ Date: _________________ Mechanical Energy Marble Roller Coaster Directions: Read the question below and formulate a hypothesis. Use the materials your teacher has provided to test your hypothesis. Create a record of your experiment on a separate sheet of paper. Question How do hills affect the mechanical energy of a roller coaster? Hypothesis Formulate and record a hypothesis. (What is the answer to your question?) Experimental Design 1. Make your track by taping two u-shaped channels end-to-end. 2. Choose and record a loop diameter between 30-50 cm (about 12-20 in.). 3. Curl the end of the track into a loop of the desired diameter. Tape the loop together where the two tracks meet at the bottom. 4. Tape the other end of the track to a bookshelf to make a ramp. 5. Now, you can tape the loop to the floor. 6. Measure and record the starting point of the track. 7. Run a marble down the track three times. Did it make it through the loop each time? Record which result happened most often (the mode). 8. Change the height and repeat trials. If the marble makes it through the loop most of the time, lower the height. If it does not, raise the height. Observations How did the height of the ramp affect the ability of the marble to complete the loop? Record your observations. Diameter of loop (centimeters) = Did the marble complete the loop? Height of starting point of track (in cm) Trial 1 Trial 2 Trial 3 Mode Conclusion What is the answer to the question? Write your conclusion. Do your findings support your hypothesis? What did you learn from this experiment? © Teacher Created Materials #13657—Energy Inquiry Handbook 35 Lesson 4 Mechanical Energy Moving, Moving, Moving Mechanical energy is the energy objects have because of their motion or position. A moving car has mechanical energy. This is due to its motion. A moving baseball has mechanical energy. This is because of its high speed and its position above the ground. A book at rest on the top shelf of a bookcase has mechanical energy. This is due to its position above the ground. Mechanical energy also involves the ability to do work. Work is done on an object when one object transfers energy to another object. The transfer of energy causes the second object to move. That move could be a twist or turn. It could be a push or pull. It could even be a throw. A push is a force from an object that repels another object away. A pull is a force from an object that draws another object closer. For example, mechanical energy is present when a hammer pushes a nail into wood. The force of the hammer makes the nail move. The hammer has mechanical energy. It is able to do work on nails. ne rg y k in e ti ce Mechanical energy is all around us. Your hand pulls a door. The door opens. A bowling ball pushes a pin. The pin falls. A wrecking ball hits a building. A hit is like a push. The building falls. Mechanical energy can be changed into other forms of energy to do work. Mechanical energy can be changed into electrical energy. Mechanical energy may also produce heat. When the heat is not used to do work, it is called waste heat. Whenever work is being done, you know mechanical energy is there. Mechanical energy keeps things moving. force (push) work is done mechanical energy at work 36 #13657—Energy Inquiry Handbook © Teacher Created Materials Lesson 4 Name:____________________________________ Date: _________________ Mechanical Energy Let the Mechanical Energy Flow Directions: Can you think of examples of how mechanical energy is used to perform work? Look at the example below. Then, use the information on the background page to list more examples of mechanical energy in action. Mechanical Energy Transfer 1st Object hammer © Teacher Created Materials Force push 2nd Object nail Work The nail is pushed into a piece of wood. #13657—Energy Inquiry Handbook 37 Lesson 4 Name:____________________________________ Date: _________________ Mechanical Energy Mechanical Energy Vocabulary Directions: Write the vocabulary word or phrase next to its definition. Choose words from the Word Box below. Word Box mechanical energy Vocabulary Word or Phrase pull push work Definition 1. a force applied by an object that repels another object away from it 2. a force applied by an object that draws another object towards it 3. the energy objects have because of their motion and position 4. when one object transfers energy to another, causing the second object to move Directions: Write a sentence using each of the vocabulary words or phrases. mechanical energy: ___________________________________________________ ____________________________________________________________________ pull: ________________________________________________________________ ____________________________________________________________________ push: _______________________________________________________________ ____________________________________________________________________ work: _______________________________________________________________ ____________________________________________________________________ 38 #13657—Energy Inquiry Handbook © Teacher Created Materials Lesson 4 Mechanical Energy Wrecking Ball Mayhem © Teacher Created Materials #13657—Energy Inquiry Handbook 39 Lesson 4 Name:____________________________________ Date: _________________ Mechanical Energy Mechanical Energy Journal Questions and Notes Thinking About Mechanical Energy Directions: Write a question you have about mechanical energy here. Question: What did you learn about mechanical energy that surprised you? ______________________________ _________________________________ ______________________________ _________________________________ Finish this sentence about mechanical energy. _________________________________ I’d like to know more about________ ______________________________ ______________________________ ______________________________ . Mechanical Energy Vocabulary Directions: Write any new words related to the term mechanical energy here. _________________________________ _________________________________ _________________________________ _________________________________ Drawings and Illustrations Directions: Draw an example of mechanical energy in your life. Include your vocabulary terms in your drawing. _______________________ _______________________ _______________________ _______________________ _______________________ _______________________ _______________________ 40 #13657—Energy Inquiry Handbook © Teacher Created Materials Lesson 4 Name:____________________________________ Date: _________________ Mechanical Energy Mechanical Energy Assessment Multiple Choice Directions: Fill in the bubble next to the correct answer for each question below. 1.Which of the following is true about energy? A Energy is destroyed over time. B Energy cannot be created or destroyed. C Energy is created throughout the day. D none of the above 2.Which is an example of work being done? A a book sitting on a table B a car parked in a garage C a girl throwing a ball D a key in a backpack 3.The total amount of potential and kinetic energy in a system is called: A thermal energy. B complete energy. C energy maximum. D mechanical energy. Comprehension Directions: Read the paragraph below. Then answer questions 4 and 5 on the following page. Fill in the bubble next to the correct answer for each question. Thinking Is Hard Work Every day, students read, write, listen, and speak. Parents often ask about all the work done at school. But what is work? Work is done on an object when one object transfers energy to another. So if you are reading a textbook, what energy is being transferred? You may think work is not being done If you are not lifting a book or turning a page. But work is being done! Parts of your brain called neurons (nOOr-ohns) receive energy signals from your eyes and transfer those signals to other parts of your brain. So the next time you want to get some work done at school, pick up a book and let your brain do the rest. © Teacher Created Materials #13657—Energy Inquiry Handbook 41 Lesson 4 Mechanical Energy Mechanical Energy Assessment (cont.) Comprehension (cont.) 4.In order for work to be done, what has to happen? A You have to sweat. B Energy needs to be transferred from one object to another. C Chemical energy must be involved. D all of the above 5.What are two objects that transfer energy between themselves when you read? A hands and eyes B eyes and brain C brain and mouth D mouth and hands Open Response Directions: Read the statement below and respond on the lines provided. Describe two ways mechanical energy is used to do work. ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ 42 #13657—Energy Inquiry Handbook © Teacher Created Materials BRUCE CHAMBERS, THE ORANGE COUNTY/Newscom + pear-shaped wrecking ball potential energy Newscom kinetic energy = mechanical energy Lesson 4 TIM BRADLEY Wrecking Ball Mayhem Background Information A wrecking ball is a heavy steel ball. It hangs from a crane. A wrecking ball can destroy an entire building. It does this with mechanical energy. Mechanical energy is the energy that an object has because of its motion or position. An object that has either of these forms of mechanical energy is able to do work. A wrecking ball works to break apart a structure. The wrecking ball has potential energy at its highest point in the air. The heavy ball has kinetic energy as it falls. The ball hits a building. It applies a force that does work to destroy the building. The wrecking ball continues to swing back and forth as the crane is raised and lowered. This allows the ball to keep hitting the building. Eventually, the wrecking ball hits its target enough times to destroy the building. Today, larger machines and special explosives are used to demolish buildings. Fewer people use wrecking balls. Demolishing buildings with explosives is faster. It is more precise. However, using explosives takes careful planning. It also requires more safety precautions than do wrecking balls. Today, wrecking balls are often used to remove structures in tight spaces. They are used on smaller buildings where explosives should or cannot be used. Or, they are used to knock buildings down to a height where explosives can be used safely. Analyzing Science ●● What are two types of energy involved in mechanical energy? ■■ What is another example of an object that uses mechanical energy to do work? Fiction Writing Prompt Imagine you are a crane operator and your main job is to use a wrecking ball to demolish old structures. Write a story about your job. ▲▲Describe a possible hazard of using a wrecking ball instead of explosives when demolishing a building. Nonfiction Writing Prompt Research the history of the wrecking ball. Answers to the following questions may be included in your summary: Who invented the device? How large were the first wrecking balls? How long does it take for the wrecking ball to do the work of destroying an old building? © Teacher Created Materials Scientific Challenge Research current ways of demolishing structures and summarize your findings. What types of machines or explosives are used? What hazards are involved? Create a poster to display your findings. #15535—Inquiry Cards
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