Chapter 5 Lesson 1 - PDF

Lesson i How Do Living Things Get Energy? Why It Matters... I. [I J a a a a a a a a A hummingbird flies above a flower, sipping nectar. Its wings beat so rapidly that they make a humming sound. The hummingbird needs a lot of energy to move its wings so quickly. Hummingbirds, like all living things,...

Lesson i How Do Living Things Get Energy? Why It Matters... I. [I J a a a a a a a a A hummingbird flies above a flower, sipping nectar. Its wings beat so rapidly that they make a humming sound. The hummingbird needs a lot of energy to move its wings so quickly. Hummingbirds, like all living things, need energy to survive. a a a I a a I a a I I I a a a I a I a S I I a I I a a a a a a a a I a a I a PREPARE 10 INVESTIGATE Inquiry Skill Compare When you compare two things, you observe how they are different and how the are alike. Materials 2 plastic cups containing soil and grass seedlings marking pen metric ruler aluminum foil plastic wrap plastic spoon water Science and Math Toolbox 4 ‘I B42 Chapter 5 For step 2, review Using a Tape Measure or Ruler on page H6. STEP 1 Up the Sun ATE )are procedure Payl o Collaborate Pay S Work with a partner. Use a marking pen to label one cup of grass seedlings Light. Label another cup Dark. In your Science Notebook, make a chart like the one shown. Height Height of grass of grass (Light) (Dark) Measure Measure the height of 0 the grass in each cup. Record the measurements on your chart. LI they Count as you add spoonfuls of water to 0 one cup until the soil is wet. Add the same amount of water to the other cup. il and Use Variables Use aluminum foil to 0 wrap the Dark cup. Use plastic wrap to wrap the Light cup. Place both cups where they will receive indirect sunlight. O Record Data After 5 days, unwrap both cu ps. Observe the appearance of the grass. Then measure and record the height of the grass in each cup. Conclusion 1. Compare In which cup did the height of the grass increase? 2. Infer Plants need energy to grow. How do you think the grass plants got the energy to grow? Investigate More! Design an Experiment Does the amount of water grass gets affect how it grows? Write a hypothesis to explain what you think. Then, plan and carry out an experiment to find out. Share your results. II I Getting Energy VOCABULARY cell solar energy MAIN IDEA All organisms need energy to grow and survive. The Sun is the source of energy for almost all living things. p. B45 p. B44 READING SKILL Main Idea and Details As you read, record one main idea and two details for each section. [ Energy from the Sun. Imagine a bright winter day. The air is col but your face feels warm as you tilt it towar the Sun. Sunlight feels warm on your face because light is energy. Energy is the ability cause change. Energy that comes from the Sun is called solar energy. Solar energy provides Earth with light and heat. Light and heat are energ The Sun provides energy that plants need to make food. Most living things could not exis without solar energy....... Dc S I I Plants use sunlight to make food. ‘.. A ‘ a.—. — - b : - 4 4 ( 4 ; - I Iv -..c%.s 04 74 114 ‘. [ts Make Food tow or cold, ward :e lity to 5 lied th energy. dto t exist F How does a plant get something to eat? It water, air, and doesn’t. Plants make food using 5nlight. The food they make is called sugar. “eat,” they do use the And although plants don’t in the food food they make. Plants use the energy to make new they make to survive, to grow, and plants. Dandelions use the food they make to produce new flowers. Apple trees make apples. Moss spreads and makes new plants. Plants store some of the food they make in their cells (sehlz). A cell is the basic unit that makes up all living things. Plants can use this stored food when the Sun is not shining. What do plants need to make food? fPlants use the food they make to survive. Almost all energy on Earth comes from the Sun. V Animals Get Energy from Plants Unlike plants, animals can’t make food. Animals must take in food in order to get the energy that they need to survive. When an animal eats, the energy is transferred from the food source to that animal. Many animals eat plant parts. Each time an animal eats a plant, energy is transferred from the plant to that animal. Not all of the energy that a plant gets from the Sun is transferred to an animal that eats the plant. Some energy is used by the plant for its survival. Some is stored in the plant’s cells. MAIN IDEA How do animals get energy from plants? A tomato plant stores energy from the Sun. Animals get some of this energy by eating the plant. B46 slug human groundhog crow Chapter 5 Lesson 1 Review o MAIN IDEA Why do living things need energy? Energy from the Sun is called solar energy. Plants use energy 7 from the Sun to make food. I Animals that eat plants get energy from plants. o VOCABULARY Writeterma sentence using the solar energy. Main Idea o READING SKILL List three details and Details that support the idea that some animals get energy from plants. o CRITICAL THINKING:tion of Synthesize A popula grass-eating lealhoppers live in a field. What would happen if all the grass in the field died? pare o INQUIRY SKILLway: Com plants get t Home and School GOOfc How does the energy compare with the way animals get energy? IESI PREP Plants survive by A. getting food from water in the soil B. making food from water, air, and sunlight C. getting food from the air D. using energy from animals WRITING Expository People have been growing crops for thousands of years. Modern scientists use technology to improve crops. Research the history of farming. Write a Paragraph about a new technology that farmers are using today. HEALTH Make a Chart Nutrients are In food. Nutrients include sugar, protein, fat, Vitamins and minerals. List the main ingredients of your favorite food. Make a chart that shows each ingredient, its animal or plant source, and the nutrients it provides. 2 Tech no logy Visit www.eduplace.comlscp/ to find out mote about how living things get enetgy. 847j