AnswersEnvironmental Science AThe Water Cycle

The Water Cycle Answers

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1
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Where is water stored?

A
clouds
B
the ground
C
animals
D
all of the above
2
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How does capillarity help sustain life?

A
Plants use capillarity to move water from their roots to their leaves.
B
Capillarity allows water to form droplets.
C
Animals rely on capillarity to maintain their body temperatures.
D
Water’s capillarity allows many different substances to dissolve in water.
3

What role do aquifers play in the water cycle?

A
They store water in the ground.
B
They transfer water to the air.
C
They are the main source of water on Earth.
D
They move water through capillarity.
4

Living organisms do not play a role in the water cycle.

T
T
F
F
5

Nearly 50% of water sources in the United States are believed to be polluted.

T
T
F
F
6

Fertilizer in ponds or streams would most likely be considered point source pollution.

T
T
F
F
7

Why does the government not do more to regulate nonpoint source pollution?

A
Nonpoint source pollution is less harmful to the environment, so it does not need to be regulated.
B
Point source pollution is more common than nonpoint source pollution, so it is more regulated.
C
Nonpoint source pollution is caused solely by animals, which are not possible to regulate.
D
Nonpoint source pollution is difficult to regulate, because its source is difficult to track.
8

How does water enter the atmosphere?

A
Liquid water evaporates from lakes when heated by the sun.
B
Frozen water sublimates from ice and snow.
C
Liquid water is lost from tree leaves during evapotranspiration.
D
All of the above.
9

How much of the Earth’s water is usable as a freshwater resource?

A
75%
B
3%
C
100%
D
25%
10

What happens to water in the atmosphere as it rises?

A
It evaporates.
B
It condenses and forms clouds.
C
It combines with other gases in the air.
D
It is used up.
11

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12

What are the ways that water vapor can reenter the atmosphere?

A
sublimation
B
evaporation
C
evapotranspiration
D
all of the above
13

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