Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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What is the force that holds the gases of the atmosphere near Earth’s
surface?
a. | centripetal | b. | centrifugal | c. | gravity | d. | orbital
acceleration |
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2.
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The primary gas in Earth’s atmosphere is
a. | nitrogen | b. | oxygen | c. | carbon
dioxide | d. | argon |
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3.
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The rocky outer shell of Earth is called the
a. | biosphere | b. | hydrosphere | c. | atmosphere | d. | lithosphere |
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4.
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The area around Earth that can sustain life is called the
a. | biosphere | b. | hydrosphere | c. | atmosphere | d. | lithosphere |
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5.
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All of the following are abiotic factors, except
a. | water | b. | moss | c. | air | d. | temperature |
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6.
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Which of the following would be characteristic biotic features of a typical
forest?
a. | mosquitos | b. | cold running water | c. | wind that rustles
the leaves | d. | all of the above |
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7.
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What does it mean for an ecosystem to be sustainable?
a. | It provides food and sustenance for humans. | b. | It has the ability
to maintain an ecological balance. | c. | It has existed for more than a
year. | d. | Plants grow in it perpetually. |
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8.
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What are some factors that might affect an aquatic ecosystem?
a. | highway salt | b. | farming fertilizer | c. | air
pollution | d. | all of the above |
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9.
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What happens to most of the radiant energy that is not converted to thermal
energy?
a. | It is used in photosynthesis. | b. | It is reflected into space. | c. | It is converted to
electricity. | d. | none of the above |
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10.
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Without producers, consumers would not be able to
a. | purchase things | b. | perform photosynthesis | c. | perform cellular
respiration | d. | none of the above |
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11.
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An omnivore
a. | eats plants or other producers | b. | eats other animals | c. | eats plants and
animals | d. | feeds on the remains of another organism |
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12.
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Estuaries are partially enclosed bodies of water where
a. | fish are hatched | b. | fresh water and salt water
meet | c. | there are salt water inlets | d. | there are observation towers in the
ocean |
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13.
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What are the main processes that cycle oxygen and carbon through an
ecosystem?
a. | nitrification and respiration | b. | photosynthesis and
nitrification | c. | photosynthesis and respiration | d. | nitrification and
respiration |
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14.
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How do the grasses of the grasslands survive prolonged periods of time without
water?
a. | store excess water in the root system | b. | absorb water from streams | c. | go
dormant | d. | all of the above |
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15.
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Which of the following is a human-made cause of extinction of other
species?
a. | disease | b. | change in food supply | c. | habitat
reduction | d. | none of the above |
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