Name Air Quality Review Date Period Multiple Choice Directions: On the line before each question or statement, write the letter of the correct answer. 1. A factory smokestack is a A. point source of air pollution. B. nonpoint source of air pollution. C. controlled source of air pollution. 2. Which example is a nonpoint source of air pollution? A. the chimney of a private home B. a smokestack from an electric power plant C. a highway that has many cars releasing exhaust 3. Which example is an effect of acid precipitation? A. temperature inversions B. weathered stone on buildings C. an increase in the concentration of smog 4. Pollution that forms when sunlight reacts with chemicals in the air is A. smog. B. radon. C. acid precipitation. 5. Why have air pollution controls failed to decrease ground-level ozone? A. There are more cars on the roads. B. Air pollution controls are not effective against ozone. C. Ozone is not covered under the Clean Air Act of 1970. Matching Directions: On the line before each definition, write the letter of the term that matches it correctly. Each term is used only once. 6. tiny particles of dust, acid, and other chemicals A. radon 7. traps pollution in air over cities B. Clean Air Act 8. indoor pollutant emitted by some soil and C. particulate matter D. carbon monoxide rocks 9. responsible for decreasing air pollution levels 10. Lead and this air pollutant have decreased the most. E. temperature inversion Name Air Quality Review Date Period Completion Directions: On each line, write the term from the word bank that correctly completes each sentence. Not all terms are used. acid precipitation carbon monoxide Clean Air Act ground-level ozone haze nitrogen oxides nonpoint particulate matter point radon smog temperature inversions 1. Tiny particles of dust and acid that are harmful when they are inhaled are 2. . is an indoor air pollutant emitted by some soil and rocks. 3. A highway crowded with pollution-releasing cars is a(n) source of pollution. 4. photochemical smog. is the main component of 5. Sulfur dioxide mixes with moisture in the air to form 6. Weak winds and . trap pollution over cities. 7. Air pollution levels in the United States have decreased since the became law. 8. A factory smokestack is a(n) pollution. source of 9. Stone grave markers become weathered in areas with 10. Clean air regulations have helped decrease levels of lead and in the air more than any other pollutants. .