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MATCHING - In the space provided, write the letter of the term or phrase that best matches the description. a. El Niñob. atmospheric CO2c. stratospheric ozoned. wintere. Montreal Protocolf. greenhouse effectg. DNA damageh. surface ocean currentsi. prevailing windsj. La Niña ______ 1. international agreement to limit CFC production______ 2. destroyed by CFCs______ 3. caused by wind and influenced by Earth’s rotation______ 4. increases when fossil fuels are burned______ 5. low-angle sunlight______ 6. winds push warm water eastward in the Pacific Ocean______ 7. heat trapped by atmosphere near Earth’s surface______ 8. potential result of high UV radiation at Earth’s surface______ 9. water is cooler than usual in the eastern Pacific Ocean______10. trade winds, westerlies, and polar easterlies MULTIPLE CHOICE - In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question. ______11. Climate in a region isa. the long-term, prevailing atmospheric conditions.b. determined only by sea- sonal daylight hours.c. the atmospheric conditions on a given day.d. never affected by ocean currents. ______12. Rain frequently results whenevera. cold, moist air rises.b. warm, moist air rises.c. warm, dry air sinks.d. cold, dry air sinks. ______13. Latitude strongly influences climate because solar energy falls on areas that are closer to the equator than to the poles.a. lessb. the same amount ofc. mored. sometimes less ______14. An important property of air circulation isa. warm air is denser than cold air.b. cold air and warm air have the same density.c. cold air is denser than warm air.d. air has no mass. ______15. Which of the following gases is mostresponsible for the greenhouse effect?a. nitrous oxideb. methanec. oxygend. water vapor ______16. Which of the following reduce(s) CO2in the atmosphere?a. phytoplanktonb. tropical rain forestsc. oceansd. all of the above ______17. During the summer, sunlight in the Northern Hemisphere shinesa. obliquely for long days.b. slanting for short days.c. more directly for long days.d. less directly for short days. ______18. Ozone in the stratospherea. causes skin cancer.b. prevents DNA repair.c. absorbs UV light.d. destroys CFCs. ______19. Ozone holes appear in polar regions during springtime when ozone-destroyinga. chlorine atoms are released from polar stratospheric clouds.b. chlorine atoms are captured by polar stratospheric clouds.c. CFCs are synthesized on polar stratospheric clouds.d. CFCs magnify ultraviolet light. ______20. Once in the atmosphere, CFCsa. quickly become harmless.b. destroy ozone for only a short time.c. persist but stop destroying ozone.d. persist and continue to destroy ozone for decades. ______21. La Niña is the ____ phase of the El Niño Southern Oscillation (ENSO) cycle.a. warm c. neutralb. cold d. mixing ______22. The average global temperature has during the 20th century.a. remained the sameb. increased every yearc. risen some years and fallen other years but has increased overalld. risen some years and fallen other years but has decreased overall
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