Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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____
is the transfer of heat by the flow of a heated material. a. | Radiation | c. | Convection | b. | Conduction | d. | Condensation | | | | |
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2.
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Sea
and land breezes are caused because ____. a. | the land heats and cools more slowly than the
water | b. | the land heats and cools more quickly than the
water | c. | air moves more easily over water than over
land | d. | air moves more
easily over land than over water | | |
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3.
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In
general, atmospheric pressure is greatest near Earth's surface and ____ as you move upward away from
sea level. a. | decreases | c. | stays the
same | b. | increases | d. | doubles | | | | |
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4.
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The
____ is the source of all energy in our atmosphere. a. | Sun | c. | Moon | b. | water cycle | d. | Coriolis effect | | | | |
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5.
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The
____ blends into outer space. a. | troposphere | c. | mesosphere | b. | stratosphere | d. | exosphere | | | | |
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6.
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There
are ____ molecules of air at high elevations, so air pressure is less. a. | fewer | c. | more | b. | the same number of | d. | no | | | | |
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7.
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The
____ is the layer of the atmosphere nearest to Earth's surface. a. | exosphere | c. | stratosphere | b. | troposphere | d. | ionosphere | | | | |
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8.
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Reflection and absorption by the atmosphere prevent some ____ from reaching Earth's
surface. a. | ozone | c. | nitrogen | b. | radiation | d. | oxygen | | | | |
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9.
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The
____ contains the highest concentration of ozone. a. | troposphere | c. | stratosphere | b. | mesosphere | d. | exosphere | | | | |
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10.
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The
process of water vapor changing to a liquid is called ____. a. | evaporation | c. | condensation | b. | precipitation | d. | convection | | | | |
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11.
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Chlorofluorocarbons may be harming the ozone layer by ____. a. | adding more
ozone molecules | c. | destroying ozone
molecules | b. | blocking ultraviolet radiation | d. | destroying oxygen molecules | | | | |
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12.
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Air
pressure is greatest ____ because there are more molecules of air pushing down from
above. a. | at the top of
the mountain | c. | in the
troposphere | b. | at sea level | d. | in the exosphere | | | | |
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Short Answer
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Figure 1I-3
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13.
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According to Figure 1I-3, which gas makes up 21 percent of Earth's
atmosphere?
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14.
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In
Figure 1I-3, which gas makes up the greatest percentage of Earth's atmosphere?
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15.
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Where
is the air pressure greater—at sea level or on a mountaintop? Explain.
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16.
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What
three things can happen to the radiation that Earth receives from the Sun?
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17.
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How
does conduction differ from convection?
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