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MATCHING - In the space provided, write the letter of the term that best matches the description.a. polar vortexb. chlorofluorocarbonsc. skin cancerd. ozone layere. phytoplankton ______ 1. strong circulating winds over Antarctica______ 2. a possible consequence to humans from a thinning ozone layer______ 3. single-celled organisms that live near the ocean’s surface______ 4. a part of the stratosphere that absorbs most of the ultraviolet light from the sun______ 5. a class of human-made chemicals that may damage the ozone layer MULTIPLE CHOICE - Choose the one best response. Write the letter of that choice in the space provided. ______ 6. Scientists estimate that a single chlorine molecule in the CFC structure can destroy as many as ozone molecules.a. 100 c. 10,000b. 1,000 d. 100,000 ______ 7. As the amount of ozone in the stratosphere decreases,a. more ultraviolet light is able to reach Earth’s surface.b. less solar energy is able to reach Earth’s surface.c. the amount of methane in the atmosphere increases.d. the amount of phytoplankton in the ocean increases. ______ 8. Polar stratospheric clouds are high-altitude clouds made ofa. ozone and CFCs. c. water and nitric acid.b. ozone and molecular chlorine. d. water and sulfuric acid. ______ 9. Which of the following is nota damaging effect of ultraviolet light on the amphibian population?a. interference with photosynthesisb. death of eggsc. genetic mutations among survivorsd. reduction of populations ______10. High ultraviolet (UV) radiation levels at Earth’s surface cana. produce CFCs. c. thin the ozone layer.b. damage DNA. d. change weather patterns.
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