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All of the following are on EPA's "four most dangerous indoor air pollutants list," except


A) ultrafine particles of various substances
B) radon-222
C) sulfur dioxide
D) tobacco smoke
E) formaldehyde

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C

Which of the following is not a part of the Asian Brown Cloud?


A) ozone
B) toxic metals
C) dust
D) smoke and ash
E) mercury

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The ____________________ established air pollution regulations for pollutants to be enforced by states and cities.

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The correct sequence of layers of the atmosphere from innermost to outermost is


A) mesosphere─stratosphere─thermosphere─troposphere
B) troposphere─stratosphere─mesosphere─thermosphere
C) stratosphere─thermosphere─troposphere─mesosphere
D) thermosphere─stratosphere─mesosphere─troposphere
E) thermosphere─mesosphere─stratosphere─troposphere

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The atmospheric layer containing 75% of the mass of earth's air is the


A) thermosphere
B) mesosphere
C) stratosphere
D) troposphere
E) tropopause

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Gray-air smog comes from suspended particles of


A) carbon dioxide
B) ammonium salts
C) soot
D) carbonic acid
E) ozone

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A(n) ____________________ neutralizes a basic or acidic substance.

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Carbon dioxide makes up 21% of the air we breathe.

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A large diesel truck emits as much particulate matter as 150 cars, and diesel trains emit as much as 1500 cars.

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True

Air pollution is a recent phenomenon, which started when coal-burning became common in the Industrial Revolution.

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     Use the Figure above to answer the following question(s). -Choose the layer that represents the separation of the mesosphere and stratosphere. Use the Figure above to answer the following question(s). -Choose the layer that represents the separation of the mesosphere and stratosphere.

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According to the World Health Organization, one in every ____ persons lives in urban areas with air that is unhealthy to breathe.


A) two
B) six
C) ten
D) twenty
E) fifty

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Which of the following statements is true?


A) Temperature inversion occurs when a layer of cold air prevents warm air from rising.
B) Temperature inversions make pollution problems worse.
C) Temperature inversions last only a few minutes to a few hours.
D) Normally, cool air near earth's surface expands and rises, carrying pollutants higher into the troposphere.
E) Temperature inversions help prevent air pollution

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Which of the following is not one of the factors that increase outdoor air pollution?


A) buildings slow wind speed and reduce dilution of pollutants
B) hills and mountains reduce the flow of air in valleys
C) high temperatures promote formation of photochemical smog
D) movement of over the oceans encounter salty sea spray
E) temperature inversions form over cities surrounded by mountains

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Urban industrial smog is rarely a problem in most developed countries.

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During the 1980 and 2008 period, decreases in emissions occurred for all of the following pollutants, except


A) lead
B) CO2
C) SO2
D) CO
E) ground-level ozone

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The grasshopper effect occurs when air pollutants are transported from tropical and temperate areas to the earth's polar regions by evaporation and wind.

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Which of the following would not be an effective preventive measure for acid deposition?


A) reduce coal use
B) burn low-sulfur coal
C) switch to natural gas or renewable energy resources
D) adding lime to neutralize the acids
E) remove SO2 and NOx from motor vehicle exhausts

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The temperature of the earth's atmosphere increases in the stratosphere because the ozone in the stratosphere absorbs UV radiation from the sun.

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Most of earth's climate occurs in the


A) troposphere
B) thermosphere
C) mesosphere
D) stratosphere
E) tropopause

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A

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