The Water Cycle and Earth Materials STEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM Water Cycle and Earth Materials During this unit of study, students will learn about the water cycle and how water interacts with earth materials (erosion, etc.). A close reading exercise is also included in this unit. The unit concludes with students writing an article about the water cycle. STEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM Next Generation Science Content Standards ESS2.C: The Roles of Water in Earth's Surface Processes Water continually cycles among land, ocean, and atmosphere via transpiration, evaporation, condensation and crystallization, and precipitation, as well as downhill flows on land. (MS-ESS2-4) The complex patterns of the changes and the movement of water in the atmosphere, determined by winds, landforms, and ocean temperatures and currents, are major determinants of local weather patterns. (MS-ESS2-5) Global movements of water and its changes in form are propelled by sunlight and gravity. (MS-ESS2-4) Variations in density due to variations in temperature and salinity drive a global pattern of interconnected ocean currents. (MS-ESS2-6) Water’s movements—both on the land and underground—cause weathering and erosion, which change the land’s surface features and create underground formations. (MS-ESS2-2) Reading Content Standards Informational RI. 5.3 Students will explain the relationships or interactions between two or more individuals, events, ideas, or concepts in a historical, scientific, or technical text based on specific information in the text. RI.5.4 Determine the meaning of general academic and domain-specific words and phrases in a text relevant to a grade 5 topic or subject area. RI.5.8 Students will explain how an author uses reasons and evidence to support particular points in a text, identifying which reasons and evidence support which point(s). RI.5.9 Students will integrate information from several texts on the same topic in order to write or speak about the subject knowledgeably. Literature RL.5.1 Students will quote accurately from a text when explaining what the text says explicitly and when drawing inferences from the text. STEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM Writing Content Standards W.5.2 Students will write informative/explanatory texts to examine a topic and convey ideas and information clearly. W.5.2.A Students will introduce a topic clearly, provide a general observation and focus, and group related information logically; include formatting (e.g., headings), illustrations, and multimedia when useful to aiding comprehension. W.5.2.B Students will develop the topic with facts, definitions, concrete details, quotations, or other information and examples related to the topic. W.5.2.C Students will link ideas within and across categories of information using words, phrases, and clauses (e.g., in contrast, especially). W.5.2.D Students will use precise language and domain-specific vocabulary to inform about or explain the topic. W.5.2.E Students will provide a concluding statement or section related to the information or explanation presented. STEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM Science Day 1 Resources/Materials: Smartboard Brainpop video Content Objective (s): I can describe the process of the water cycle. Language objective (s): I can use sequence words to describe the water cycle. Important Questions: (Teacher will display questions on chart paper and post on/near Science Word Wall. Upon the completion of each lesson teacher will post studentdeveloped answers for each question.) o Where can you find water? ¿Dónde se puede encontrar agua ? o Where does it come from? ¿De dónde viene eso? o How does the water cycle work? ¿Cómo funciona el ciclo del agua ? Lesson Activity: Introduction This lesson will serve as an introduction to the new unit. 1. Spend time recalling prior knowledge with the class using a KWL chart to find out what students know about the water cycle and the interactions with earth materials. 2. Students will view the Brainpop video “Water Cycle”. At the end of the video, take the ‘graded quiz’ as a class using the Smart Board, discussing each question as a class. 3. Teacher will introduce Word Wall Words for the unit in English and Spanish. Students will complete a KWL chart for the terms. Daily Formative Assessment: Video quiz After the quiz discussion, students will turn to a neighbor and use sequence words to describe the water cycle. Reading Day 1 The following Reading lessons accompany the close reading lessons, Water Cycle Close Reading 3rd-6th Grade-CCSS Aligned , found on the following website: https://www.teacherspayteachers.com/Product/Water-Cycle-Close-Reading-3rd-6th-GradeCCSS-Aligned-1798608 Resources/Materials: Close Reading Passage: Water Cycle (Lexile Level 1070) Main Idea, Key Words, and Summary graphic organizer The Water Cycle by Craig Hammersmith Word Wall Lesson Objective (s): I can determine the meaning of general academic and domainSTEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM specific words and phrases in a text relevant to a grade 5 topic or subject area. Important Questions: o What strategies are important to use when reading difficult text? ¿Qué estrategias son importantes para utilizar al leer el texto difícil? o How can graphic organizers help with reading comprehension? ¿Cómo pueden los organizadores gráficos ayudar con la comprensión de lectura ? Lesson Activity: 1. Read The Water Cycle by Craig Hammersmith aloud each day to students. While reading, allow students to ask questions and make connections from prior knowledge. Teacher will model highlighting strategy by selecting (using highlight tape) words that are important to the text. Teacher and students will discuss why these words are important to the text. 2. Provide students with Close Reading Passage: Water Cycle. Students will read the passage and highlight words they feel are important to the passage. 3. Have students complete the graphic organizer: Main Idea, Key Words and Summary (English Language Learners will work with more proficient language users) 4. Students will share their completed organizer with a partner for feedback. Daily Formative Assessment: Completion of the Main Idea, Key Words and Summary graphic organizer ‘Flashlight Word’ Word Wall Activity- Start off the game by turning off the lights and pointing the flashlight at a particular word on the Word Wall. The teacher calls on a student to read and define the word. When the child has read (in English and Spanish) and defined the word, it is their turn to shine the flashlight on a word and call on another student to read or define. Teacher will determine, during the game, where content vocabulary deficits exists among the students. Science Day 2 Resources/Materials: Boiling water Small glass dish Ice cubes Large glass dish Salt Plastic wrap Interactive Notebooks Word Wall Content Objective (s): I can describe the process of the water cycle. I can understand that the earth’s water supply is constantly cycled from the ocean to the atmosphere. Language objective (s): I can explain the results of my experiment orally to the class, STEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM using scientific language.” The following sentence frames will be posted for students to reference as they explain their results: Our hypothesis was________. Our results showed ______. Our conclusion was _____. Important Questions: (Teacher will display questions on chart paper and post on/near Science Word Wall. Upon the completion of each lesson teacher will post studentdeveloped answers for each question.) o Is water a solid, liquid, or a gas? ¿Es el agua un sólido , líquido o un gas ? o Where can you find water? ¿Dónde se puede encontrar agua ? Where does it come from? ¿De dónde viene eso? o Is ice a solid, liquid, or a gas? ¿Es el hielo un sólido , líquido o un gas ? Lesson Activity: The Hydrologic Cycle 1. Introduce the water cycle song and sing it a few times with the class. 2. Ask ‘Important Questions’ to activate prior knowledge. 3. Present and discuss vocabulary terms, students will record terms in their notebook. 4. Play the following video without sound: https://youtu.be/jaPvDvO2nUc. 5. Allow students to work in groups to recreate the video experiment. Students will present their experiment to the class by verbally explaining what they believe happened. (English language learners will be placed in groups with proficient language learners.) 6. Using student handouts, replay the video with sound, explaining each of the steps and highlighting the parts that each group correctly stated 7. Teacher will introduce a Generative Vocabulary Matrix Bulletin Board with the categories: Everyday Science Words, Academic Words that shows relationships, and New Domain Specific Content Vocabulary. Students are provided with sticky notes and are instructed to add words to the matrix categories as appropriate. Students will recreate the Bulletin Board in their Interactive Notebook, as words are added to the Board, students will also add to their notebooks. Daily Formative Assessment: Students will complete a journal entry in their interactive notebooks, they will cut out and paste the handout from today’s activity and write captions, using Word Wall words, explaining each step of the water cycle. Students will add words to the GVM bulletin board and their notebooks. Teacher will begin collecting Anecdotal notes on students’ use of new domain specific content vocabulary to monitor growth throughout the unit. Reading Day 2 Resources/Materials: Close Reading Passage: Water Cycle (Lexile Level 1070) Vocabulary graphic organizer The Water Cycle by Craig Hammersmith STEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM Word Wall/ GVM Lesson Objective (s): I can determine the meaning of general academic and domain-specific words and phrases in a text relevant to a grade 5 topic or subject area. Important Questions: o What strategies are important to use when reading difficult text? ¿Qué estrategias son importantes para utilizar al leer el texto difícil? o How can graphic organizers help with reading comprehension? ¿Cómo pueden los organizadores gráficos ayudar con la comprensión de lectura ? Lesson Activity: 1. Read The Water Cycle by Craig Hammersmith aloud each day to students. While reading, allow students to ask questions and make connections from prior knowledge. 2. Provide students with Close Reading Passage: Water Cycle. Students will read the passage and highlight words they feel are important to the passage. 3. Have students complete the graphic organizer: Vocabulary 4. Students will share their completed organizer with a partner for feedback. Daily Formative Assessment: Completion of the Vocabulary graphic organizer ‘Guess My Word’ Word Wall Activity-Teacher gives clues about each word. This activity can be done in a couple of ways. The teacher asks the students to number their paper from 1 to 10 in their notebooks and gives clues about the word. The student then writes down what they believe the word is. The other method is to do the activity orally and let a student point to the word on the word wall. Science Days 3 & 4 Resources/Materials: Poster board for each group Markers Word Wall/ GVM Content Objective (s): I can describe the process of the water cycle. I can understand that the earth’s water supply is constantly cycled from the ocean to the atmosphere. Language objective (s): I can distinguish between the vocabulary words condensation and precipitation and explain their role in the Hydrologic Cycle. Important Questions: (Teacher will display questions on chart paper and post on/near Science Word Wall. Upon the completion of each lesson teacher will post studentSTEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM developed answers for each question.) o Where can you find water? ¿Dónde se puede encontrar agua ? Where does it come from? ¿De dónde viene eso? o How does the water cycle work? ¿Cómo funciona el ciclo del agua ? o What are the parts of the water cycle? ¿Cuáles son las partes del ciclo del agua? Lesson Activity: The Hydrologic Cycle 1. Sing the water cycle song. 2. Review what was discussed the previous day about the water cycle, vocab, etc. 3. Students then will be placed into five groups. English Learners will be placed in groups with proficient language users. Each group will be given one of the processes of the water cycle. They are to illustrate the process on poster board and write a description of their process. Encourage groups to use academic language and content vocabulary to label their drawings and in their written responses. Sample Groups: condensation, precipitation, evaporation, infiltration and transpiration. 4. Students will present their posters the following day. Posters will be displayed in the building (library, cafeteria, science lab) and featured on school’s website. 5. Students will add to GVM (Bulletin Board and Notebooks) as appropriate. Daily Formative Assessment: Exit Slip- Explain the difference between the following vocabulary words: condensation and precipitation. Teacher will collect Anecdotal notes on students’ use of new domain specific content vocabulary during poster presentations to monitor growth throughout the unit. Reading Day 3 Resources/Materials: Close Reading Passage: Water Cycle (Lexile Level 1070) Text Evidence graphic organizer The Water Cycle by Craig Hammersmith Word Wall/ GVM Lesson Objective (s): I can explain how an author uses reasons and evidence to support particular points in a text, identifying which reasons and evidence support which point(s). I can determine the meaning of general academic and domain-specific words and phrases in a text relevant to a grade 5 topic or subject area. Important Questions: o What strategies are important to use when reading difficult text? ¿Qué estrategias son importantes para utilizar al leer el texto difícil? o How can graphic organizers help with reading comprehension? ¿Cómo pueden los STEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM organizadores gráficos ayudar con la comprensión de lectura ? Lesson Activity: 1. Read The Water Cycle by Craig Hammersmith aloud each day to students. While reading, allow students to ask questions and make connections from prior knowledge. 2. Provide students with Close Reading Passage: Water Cycle. Students will read the passage and highlight words they feel are important to the passage. 3. Have students complete the graphic organizer: Text Evidence 4. Students will share their completed organizer with a partner for feedback. Daily Formative Assessment: Completion of the Text Evidence graphic organizer ‘Peer Test’ Word Wall Activity- Students take turns testing each other on the meaning of each of the words on the Word Wall. Reading Day 4 Resources/Materials: Close Reading Passage: Water Cycle (Lexile Level 1070) Comparing Text graphic organizer The Water Cycle by Craig Hammersmith Word Wall/ GVM Lesson Objective (s): I can explain, using precise language, the relationships or interactions between two or more individuals, events, ideas, or concepts in a historical, scientific, or technical text based on specific information in the text. I can integrate information from several texts on the same topic in order to write or speak about the subject knowledgeably. Important Questions: o What strategies are important to use when reading difficult text? ¿Qué estrategias son importantes para utilizar al leer el texto difícil? o How can graphic organizers help with reading comprehension? ¿Cómo pueden los organizadores gráficos ayudar con la comprensión de lectura ? Lesson Activity: 1. Read The Water Cycle by Craig Hammersmith aloud each day to students. While reading, allow students to ask questions and make connections from prior knowledge. 2. Provide students with Close Reading Passage: Water Cycle. Students will read the passage and highlight words they feel are important to the passage. 3. Allow students to preview graphic organizer: Comparing Text. Pair English Learners STEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM with proficient language users. Ask pairs of students to verbally discuss how they would complete the organizer. 4. Students will independently complete the graphic organizer: Comparing Text 5. Students will share their completed organizer with their partner for feedback. Daily Formative Assessment: Completion of the Comparing Text graphic organizer; partner discussion ‘Cartoon Caption’ Word Wall Activity- Give students a collection of comics from the Sunday paper and have them each choose a strip. Tell them to cut the strip apart and glue three of the individual panels in sequence on a piece of paper. Then have the students write new captions under each of the panels or in the speech bubbles, using words from the word wall to create a story. Have students share their cartoon captions with the class. Science Days 5-8 Resources/Materials: Stream table Nylon netting pieces Small river rocks Popsicle sticks Small model pine trees Watering can Labels on sticks Interactive notebook Word Wall/ GVM Content/Language Objective (s): I can explain, using domain specific vocabulary, interactions of water with Earth materials and the results of those interactions. Important Questions: (Teacher will display questions on chart paper and post on/near Science Word Wall. Upon the completion of each lesson teacher will post studentdeveloped answers for each question.) o What happens to creeks, streams, and rivers after a heavy downpour of rain? ¿Qué sucede con riachuelos , arroyos y ríos después de un fuerte aguacero ? o What do you think are some of the effects of flooding? ¿Qué crees que son algunos de los efectos de las inundaciones ? o How did flooding affect erosion and deposition in your stream table? ¿Cómo afectan las inundaciones erosión y deposición de la tabla corriente ? o What was observed at the bends of the streams for erosion and deposition? (Erosion on the outside curve, deposition on the inside curve) Lo que se observó en las curvas de las corrientes de la erosión y la deposición ? o What was observed where the stream hit the lake or ocean? (Deltas or alluvial fans) Lo que se observó en el torrente golpeó el lago o el océano ? STEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM o How does the riverbed change as it travels over steeper and flatter terrain? (Digs deeper and stays straight on steep ground, meanders over flatter terrain) ¿Cómo cambia el cauce del río a medida que viaja por un terreno empinado y más plano? o Talk about the health of watersheds, bringing in the ethics of land use. Hable acerca de la salud de las cuencas hidrográficas , con lo que en la ética del uso de la tierra . o What is the relationship between the angle of the mountain, rainfall, and landslides? ¿Cuál es la relación entre el ángulo de la montaña, la lluvia y los deslizamientos de tierra ? o How does slope effect erosion? (Steeper slopes have increased erosion) ¿Cómo afecta la pendiente de la erosión ? Lesson Activity: Erosion Investigations Sub-activities Streams as part of the water cycle 1. Introduce the rules of the stream table. For example, no water or sand outside the table, no splashing, washing hands before and after use, and keeping sand away from the outlet. 2. Show students how the stream table works. Include modeling a landscape, turning on the water, and observing the movement of sand particles at the edges of the streams. 3. Allow students to experiment with the stream table and various landforms, stream configurations, and water flows. 4. Discuss as a group or in writing what was observed and what other trials could be explored with the stream table. Healthy watersheds demonstration 1. Give the students information about watersheds and how they operate. 2. Create two hills in the sand with a valley in between that could have a stream. Turn the water off for this demonstration. 3. Sprinkle the hills with water to show that the runoff goes into the stream. This illustrates that the watershed is the land that collects the water from rainfall, with the stream being the overflow. Also observe the amount of soil that runs off the hills during the rainfall. 4. Reshape the hills if necessary. Place a piece of netting over one hill. The netting illustrates roots or grass on the hill. Sprinkle with water. Observe the decrease in soil runoff when roots help to hold the soil in place. 5. Reshape the hills if necessary. Place small model pine trees on the hill. These can be on top of the netting or separate. Sprinkle with water. Observe the decrease in soil runoff when trees slow the fall of water to the soil. 6. Reshape the hills if necessary. Remove the trees to simulate a fire or clear cutting situation. Sprinkle with water. Observe the increase in soil runoff when trees have been removed. 7. Reshape the hills if necessary. Place popsicle sticks along the contours of STEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM the hill to simulate reclamation work on the hills after a fire. (Fire crews place tubes stuffed with straw along the contour lines to slow the flow of water and soil runoff after a fire.) Sprinkle with water. Observe the decrease in soil runoff when reclamation work is done. 8. Demonstrate other variations of watershed/land management as desired. 9. Discuss what was observed in terms of watershed management and health, including the ethics, politics, and values of management decisions. 10. Discuss the use of models, how they can be great visualizations of systems, and how they can exaggerate or under-represent portions of a system. 11. Point out or ask about the size of watersheds - that they can be very large (for example, all of the land over which the Mississippi River and its outflow flow) Aquifer demonstration 1. Dig into the sand. Water from the ground water will fill the hole to the level of water in the lake. This illustrates that water is underground within the pores of the rock/soil and not in an underground lake. 2. Discuss how the water moves through the pores of sand to fill up the hole through capillary action and gravity. Mass wasting inquiry 1. Have groups of students use the stream table to explore mass wasting by creating a mountain and then sprinkling water and observing the landslides. Ideas: * Create mountains of different heights. * Sprinkle water for different amounts of time. * Time the sprinkling process from start to slide. * Measure the extent of landslide compared to height or rainfall. Daily Formative Assessment: For each day 6-9, students will respond in their interactive notebooks to the sub-activity of the day. Students will discuss what they liked about the investigation, what they learned and what questions they still have and would like to explore more about. Students are required to include vocabulary from the Word Wall in their response. Students will complete their KWL chart from Day 1 of the unit. Students will share questions they still have with the content as well as insights they’ve developed throughout the unit. Teacher will collect Anecdotal notes on students’ use of new domain-specific content vocabulary during activities to monitor growth throughout the unit. Writing Day 9 Resources/Materials: STEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM Chart Paper/markers Informative Writing Graphic Organizer Word Wall/GVM Mentor text: Weather: The Water Cycle Lesson Objective (s): I can write informative/explanatory texts to examine a topic and convey ideas and information clearly. I can introduce a topic clearly, provide a general observation and focus, and group related information logically; include formatting (e.g., headings), illustrations, and multimedia when useful to aiding comprehension. I can develop the topic with facts, definitions, concrete details, quotations, or other information and examples related to the topic. I can link ideas within and across categories of information using words, phrases, and clauses (e.g., in contrast, especially). Language Objective: I can use precise language and domain-specific vocabulary (Word Wall) to inform about or explain the topic. Lesson Activity: 1. Provide each student a copy of the mentor text. Together, develop an anchor chart of the characteristics of an article. Students will highlight those characteristics on their copy of the mentor text. Students will also discuss the presence of academic language within the article. In a different color, students will highlight academic language including phrases, clauses, etc. that make the text more scholarly. Teacher will create sentence frames from that discussion and post on the board for students to reference throughout their writing. 2. Students will organize their thoughts into the Informative Writing Graphic Organizer. 3. Students will be placed with a peer conferencing partner to share and receive feedback on their ideas throughout the writing process. English learners will be partnered with proficient language users. 4. Students will conference with teacher throughout to edit and revise their article. 5. Students will identify several domain specific words to include in their article. A chart will be developed and displayed of potential content vocabulary terms to use as well as other academic vocabulary. Included on the chart will be possible phrases and clauses that students may consider using as they write in addition to the sentence frames from earlier in the lesson. Daily Formative Assessment: Conference form Students ability to find academic language in the mentor text. Writing Day 10 Resources/Materials: STEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM Writer’s Notebook Word Wall/ GVM Mentor text: Weather: The Water Cycle Lesson Objective (s): I can write informative/explanatory texts to examine a topic and convey ideas and information clearly. I can introduce a topic clearly, provide a general observation and focus, and group related information logically; include formatting (e.g., headings), illustrations, and multimedia when useful to aiding comprehension. I can develop the topic with facts, definitions, concrete details, quotations, or other information and examples related to the topic. I can link ideas within and across categories of information using words, phrases, and clauses (e.g., in contrast, especially). Language Objective: I can use precise language and domain-specific vocabulary (Word Wall) to inform about or explain the topic. Lesson Activity: 1. Students will introduce their topic and draft their opening paragraph 2. Students will share and receive feedback with peer conferencing partner 3. Students will conference with teacher 4. Students will identify their use of precise language and domain-specific vocabulary during peer and teacher conferences and edit as appropriate. Daily Formative Assessment: Conference form Writing Days 11-12 Resources/Materials: Writer’s Notebook Word Wall/ GVM Mentor text: Weather: The Water Cycle Lesson Objective (s): I can write informative/explanatory texts to examine a topic and convey ideas and information clearly. I can develop the topic with facts, definitions, concrete details, quotations, or other information and examples related to the topic. I can link ideas within and across categories of information using words, phrases, and clauses (e.g., in contrast, especially). Language Objective: I can use precise language and domain-specific vocabulary (Word Wall) to inform about or explain the topic. STEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM Lesson Activity: 1. Students will draft the remaining paragraphs in their article. 2. Students will share with peer conferencing partner 3. Students will conference with teacher 4. Students will identify their use of precise language and domain-specific vocabulary during peer and teacher conferences and edit as appropriate. Daily Formative Assessment: Conference form Use of precise language and domain-specific vocabulary Writing Day 13 Resources/Materials: Writer’s Notebook Word Wall/ GVM Mentor text: Weather: The Water Cycle Lesson Objective (s): I can write informative/explanatory texts to examine a topic and convey ideas and information clearly. I can develop the topic with facts, definitions, concrete details, quotations, or other information and examples related to the topic. I can link ideas within and across categories of information using words, phrases, and clauses (e.g., in contrast, especially). I can provide a concluding statement or section related to the information or explanation presented. Language Objective: I can use precise language and domain-specific vocabulary (Word Wall) to inform about or explain the topic. Lesson Activity: 1. Students will draft a conclusion and share with peer conferencing partner 2. Students will select photographs to include in their final draft 3. Students will conference with teacher 4. Students will identify their use of precise language and domain-specific vocabulary during peer and teacher conferences and edit as appropriate. Daily Formative Assessment: Conference form Photos that enhance the content of text Publish: STEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM Students will type their final draft and publish it on the class website. Parents will be invited one evening after school to hear students share articles orally. Sources: Ellen DeBacker, Stream Table Uses for Exploring Water Erosion and Deposition http://www.dpc.ucar.edu/projects/bvsd03/deBackerUnit2Act1.html Teach to the Core, Water Cycle Close Reading 3-6, Teachers Pay Teachers Vocabulary Word Definitions retrieved from: http://water.usgs.gov/edu/watercycle-kidsint.html Word Wall Activities http://www5.esc13.net/thescoop/ell/files/2013/12/IWWHandouts.pdf Writing Mentor Text- Weather: The Water Cycle http://www.readworks.org/passages/weather-water-cycle Images selected from Google Images STEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM Word Wall (English and Spanish) acid (ácido)--a substance that has a pH of less than 7, which is neutral. Specifically, an acid has more free hydrogen ions (H+) than hydroxyl ions (OH-). aquifer (acuífero)--a geologic formation(s) that is water bearing. A geological formation or structure that stores and/or transmits water, such as to wells and springs. Use of the term is usually restricted to those water-bearing formations capable of yielding water in sufficient quantity to constitute a usable supply for people's uses. condensation (condensación)--the process of water vapor in the air turning into liquid water. Water drops on the outside of a cold glass of water are condensed water. Condensation is the opposite process of evaporation. droplet (gotita)--a tiny drop evaporation (evaporación)--the process of liquid water becoming water vapor, including vaporization from water surfaces, land surfaces, and snow fields, but not from leaf surfaces. evapotranspiration--the sum of evaporation and transpiration. freshwater (agua dulce)--water that contains less than 1,000 milligrams per liter (mg/L) of dissolved solids; generally, more than 500 mg/L of dissolved solids is undesirable for drinking and many industrial uses. glacier (glaciar)--a huge mass of ice, formed on land by the compaction and recrystallization of snow, that moves very slowly downslope or outward due to its own weight. greywater (agua gris)--wastewater from clothes washing machines, showers, bathtubs, hand washing, lavatories and sinks. groundwater (las aguas subterráneas)-- water that flows or seeps downward and saturates soil or rock, supplying springs and wells. hydrologic cycle (ciclo hidrológico)--the cyclic transfer of water vapor from the Earth's surface via evapotranspiration into the atmosphere, from the atmosphere via precipitation back to earth, and through runoff into streams, rivers, and lakes, and ultimately into the oceans. precipitation (precipitación)--rain, snow, hail, sleet, dew, and frost. STEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM runoff (huir)--an election to resolve a vote that did not produce a winner transpiration (transpiración)--the emission of water vapor from the leaves of plants water cycle (El ciclo del agua)--the circuit of water movement from the oceans to the atmosphere and to the Earth and return to the atmosphere through various stages or processes such as precipitation, interception, runoff, infiltration, percolation, storage, evaporation, and transportation. watershed (cuenca)--the land area that drains water to a particular stream, river, or lake. It is a land feature that can be identified by tracing a line along the highest elevations between two areas on a map, often a ridge. Large watersheds, like the Mississippi River basin contain thousands of smaller watersheds. water vapor (vapor de agua)--water in a vaporous form diffused in the atmosphere but below boiling temperature STEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM STEM CURRICULUM PLANNING UNIT_DRAFT 2 HASKINS, KIM
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