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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Earth's atmosphere is important to living things because it a. | contains
dust. | b. | is very thin compared to the size of
Earth. | c. | provides all the gases needed for living
things. | d. | maintains a constant relative
humidity. | | |
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2.
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The
two most abundant gases in the atmosphere are a. | carbon dioxide and oxygen. | b. | carbon dioxide
and nitrogen. | c. | nitrogen and oxygen. | d. | nitrogen and
hydrogen. | | |
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3.
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In
addition to gases, air also contains a. | water vapor. | b. | ozone. | c. | particles. | d. | carbon
dioxide. | | |
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4.
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The
condition in which a layer of warmer air prevents polluted air from rising and escaping is
called a. | a temperature
inversion. | b. | global warming. | c. | the greenhouse
effect. | d. | the ozone layer. | | |
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5.
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Which
of the following is a common indoor air pollutant? a. | acid
rain | b. | cigarette
smoke | c. | ozone | d. | photochemical
smog | | |
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6.
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The
ozone layer protects people from which of the following? a. | too much
ultraviolet radiation | b. | carbon monoxide poisoning | c. | the effects of
radon | d. | allergies | | |
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7.
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One
group of gases that is responsible for destroying ozone in the ozone layer is a. | airplane exhaust
fumes. | b. | ChloroFluoroCarbons (CFCs). | c. | factory exhaust
fumes. | d. | carbon monoxide and carbon dioxide. | | |
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8.
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Heat
is trapped near Earth’s surface by a. | the greenhouse effect. | b. | the ozone
layer. | c. | smog. | d. | radon. | | |
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9.
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Increased amounts of carbon dioxide in Earth’s atmosphere may lead
to a. | more
photochemical smog. | b. | global warming. | c. | a hole in the
ozone layer. | d. | less of a greenhouse effect. | | |
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10.
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Most
scientists base their climate predictions on a. | weather reports. | b. | analysis of acid
rain. | c. | observations of clouds. | d. | computer
models. | | |
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11.
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Density can be determined using a. | Density = Mass/Volume. | b. | Density =
Volume/Mass. | c. | Density = Mass ´ Volume. | d. | Density = Mass +
Volume. | | |
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12.
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The
air pressure acting on the roof of your house a. | comes from the air within a few feet of your
rooftop. | b. | is greater on top of the roof than below
it. | c. | comes from the
air above and below your roof. | d. | is greater underneath your roof than on top of
it. | | |
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13.
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Instruments used to measure air pressure are called a. | thermometers. | b. | hygrometers. | c. | hydrometers. | d. | barometers. | | |
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14.
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As
you rise farther in the atmosphere, air pressure a. | increases. | b. | decreases. | c. | doesn't change. | d. | first increases,
then decreases. | | |
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15.
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The
main layers of the atmosphere are classified according to changes in a. | altitude. | b. | density. | c. | pressure. | d. | temperature. | | |
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16.
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The
layer in our atmosphere in which weather occurs is the a. | troposphere. | b. | stratosphere. | c. | mesosphere. | d. | exosphere. | | |
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17.
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The
ozone layer in the stratosphere absorbs a. | visible light. | b. | infrared
rays. | c. | ultraviolet radiation. | d. | carbon
dioxide. | | |
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Modified True/False
Indicate
whether the sentence or statement is true or false. If false, change the identified word or
phrase to make the sentence or statement true.
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18.
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Earth's weather is the thin layer of gases that surrounds Earth.
_________________________
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19.
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The
density of a fixed volume of air increases as its mass increases.
_________________________
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20.
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Ozone
that forms close to Earth’s surface as smog is helpful to humans.
_________________________
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