AnswersSC332 Environmental Science BGroundwater

Groundwater — Unit test Answers

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1
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Access to potable water is most heavily limited by _______.

A
money
B
precipitation
C
raw water supplies
D
climate
2
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Which of the following is not an option for solving the world water crisis?

A
desalination
B
finding new sources of freshwater
C
reducing overconsumption
D
wastewater treatment plants
3

Which of the following is true of salt lakes?

A
The water flowing in to salt lakes comes directly from the ocean.
B
Salt lakes are formed when river bends are cut off.
C
The water flowing in to salt lakes contains minerals.
D
Salt lakes do not experience shrinking due to erosion.
4

Which of the following regulations is the primary law regarding water pollution?

A
The Safe Drinking Water Act
B
The Clean Water Act
C
The Marine Protection, Research, and Sanctuaries Act
D
WaterSense
5

Which of the following practices could help reduce erosion of water banks?

A
buffer strips
B
natural fertilizers and pesticides
C
decrease in fossil fuel emissions
D
all of the above
6

Which of the following statements about desalination is true?

A
Desalination is less expensive than water reclamation.
B
Desalination uses large amounts of energy.
C
Desalination is the main process used to provide water for crop irrigation.
D
All of the above
7

Freshwater is used principally as drinking water.

A
T
B
F
8

Human activity on land can have a profound influence on marine ecosystems.

A
T
B
F
9

Potable water delivery systems are characterized by _______.

A
high infrastructure costs
B
aqueducts
C
glass bottles
D
rivers
10

Which of the following is true about impervious building materials?

A
Impervious surfaces prevent pollutants from entering the water supply.
B
Vegetation and gravel are common impervious materials.
C
Having fewer impervious surfaces improves water drainage.
D
All of the above
11

Why is groundwater an important source of freshwater storage?

A
It constitutes approximately 30% of Earth’s freshwater.
B
It is the only viable source of freshwater in some areas.
C
It is available in conditions of drought.
D
All of the above
12

The principle difference between point source and nonpoint source water pollution is _______.

A
whether the pollution is organic or inorganic
B
the number of sources of pollution
C
the amount of pollution
D
whether it is from commercial or agricultural sources
13

Which of the following best explains the importance of water to humans?

A
Water is essential for sustaining human life.
B
Water is important for shipping and trade.
C
Water is a valuable, profitable commodity.
D
All of the above
14

Flooding on rivers is caused by human activity rather than natural events.

A
T
B
F
15

Which of the following does not represent an impact of recreational activity on springs?

A
destruction of native vegetation
B
wildlife disruption
C
decreased soil erosion
D
water pollution
16

Groundwater is only found below the water table.

A
T
B
F
17

Conserving water can save money while protecting the environment.

A
T
B
F
18

The use of wells to obtain drinking water is a modern convenience.

A
T
B
F
19

Why is water conservation important?

A
It is important in desert areas because water is scarce, but not in areas with high levels of precipitation.
B
Water conservation is important because people are currently consuming freshwater resources faster than they can be replenished.
C
Water conservation is important because only 10% of Earth’s water sources are usable.
D
All of the above are true.

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