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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The
atmosphere is a. | the layer in
which weather occurs. | b. | the layer that contains the ozone
layer. | c. | the layer of water in the oceans. | d. | the layer of
gases that surrounds Earth. | | |
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2.
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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. | d. | maintains a
constant relative humidity. | | |
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3.
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Earth's atmosphere traps energy from the sun, which a. | allows water to
exist as a liquid. | b. | allows solar radiation to penetrate to the
surface. | c. | allows ozone to form easily. | d. | causes meteors
to burn up. | | |
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4.
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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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5.
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Earth's atmosphere contains about four times as much nitrogen as a. | carbon
dioxide. | b. | oxygen. | c. | hydrogen. | d. | helium. | | |
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6.
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The
gases in our atmosphere aside from oxygen and nitrogen make up about what percentage of dry
air?
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7.
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Ozone
is a. | a form of oxygen
with three oxygen atoms in each molecule. | b. | a form of nitrogen with three oxygen atoms in each
molecule. | c. | a form of oxygen with two oxygen atoms in each
molecule. | d. | a form of nitrogen with two oxygen atoms in each
molecule. | | |
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8.
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Water
vapor is water in the form of a. | steam. | b. | crystals. | c. | a gas. | d. | droplets. | | |
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9.
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What
is the thick, brownish haze formed when certain gases react in sunlight? a. | photochemical
smog | b. | acid
rain | c. | carbon
monoxide | d. | radon | | |
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10.
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What
is the major source of photochemical smog? a. | smoke from forest fires | b. | CFCs and water
vapor | c. | gases from volcanic eruptions | d. | gases emitted by
automobiles and trucks | | |
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11.
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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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12.
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One
group of gases that is responsible for destroying ozone in the ozone layer is a. | car exhaust
fumes. | b. | CFCs. | c. | nitrogen oxides
and sulfur oxides. | d. | carbon monoxide and carbon dioxide. | | |
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13.
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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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14.
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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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15.
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Air
in the atmosphere has pressure because a. | the stratosphere is thick. | b. | air has
mass. | c. | wind moves the air. | d. | temperature
warms the air. | | |
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16.
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The
less mass in a given volume of air, the a. | more the air weighs. | b. | greater the air
pressure. | c. | more dense the air. | d. | less dense the
air. | | |
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17.
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The
National Weather Service measures air pressure in units called a. | aneroids. | b. | barometers. | c. | millibars. | d. | pressure bars. | | |
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18.
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Instruments used to measure air pressure are called a. | thermometers. | b. | hygrometers. | c. | hydrometers. | d. | barometers. | | |
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19.
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An
aneroid barometer is different from a mercury barometer in that it a. | measures
temperature. | b. | uses alcohol instead of mercury. | c. | does not contain
a liquid. | d. | provides readings that increase as air pressure
increases. | | |
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20.
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When
climbing a high mountain, you get out of breath easily because a. | the percentage
of oxygen in the air decreases. | b. | the air is denser. | c. | there is less
oxygen in each cubic meter of air. | d. | air pressure is greater. | | |
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21.
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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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22.
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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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23.
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From
Earth to space, the main layers in our atmosphere are: a. | troposphere,
stratosphere, mesosphere, thermosphere. | b. | stratosphere, troposphere, mesosphere,
thermosphere. | c. | mesosphere, troposphere, stratosphere,
thermosphere. | d. | thermosphere, troposphere, stratosphere,
mesosphere. | | |
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24.
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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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25.
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What
is the first layer of atmosphere an astronaut passes through during reentry
from space? a. | stratosphere | b. | ionosphere | c. | exosphere | d. | mesosphere | | |
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26.
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Radio
waves are reflected back to Earth in the a. | exosphere. | b. | ionosphere. | c. | thermosphere. | d. | mesosphere. | | |
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