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Water on Earth Answer the following questions on a separate sheet of paper. 1. Identify two ways in which water is important to living things. 2. What is the main source of energy that causes the water cycle? The diagram below shows the water cycle. Use the diagram to answer Questions 3–5. 3. What process is shown at point A? Is water a liquid, solid or gas during this process? 4. What process is shown at point B? Is water a liquid, solid or gas during this process? 5. What process is shown at point C? Is water a liquid, solid or gas during this process? Building Vocabulary Write a definition for each of these terms. 6. groundwater 7. runoff 8. evapotranspiration 9E The Air Around You Understanding Main Ideas If the statement is true, write true. If the statement is false, change the underlined word or words to make the statement true. 1. More than three fourths of the air we breathe is oxygen. 2. Argon is the second most abundant gas in air. 3. Plants need carbon dioxide to produce food. 4. Without nitrogen in the air, a fire will not burn. 6. __________________ Condensed water vapor in the atmosphere forms clouds. 7. Energy from the wind drives the motions in the atmosphere. Energy in Earth’s Atmosphere Building Vocabulary Match each term with its definition by writing the letter of the correct definition in the right column on the line beside the term in the left column. a. a form of energy with wavelengths that are longer than those of red light 1. electromagnetic waves 2. radiation 3. infrared radiation b. the direct transfer of energy by electromagnetic waves 4. ultraviolet radiation c. reflection of light in all directions 5. scattering d. a form of energy that can travel through space 6. greenhouse effect e. the process by which gases in the atmosphere hold heat f. a form of energy with wavelengths that are shorter than those of violet light Heat Transfer 1. Radiation, conduction and convection work together to heat the atmosphere. Write out the steps of how this happens. Write these as a numbered list. (Ex. 1st, 2nd, 3rd, 4th, etc) Use your diagram notes to help you.