Prescriptive Test — Unit test Answers

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21
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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
22
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Potable water delivery systems are characterized by _______.

A
high infrastructure costs
B
aqueducts
C
glass bottles
D
rivers
23

Access to potable water is most heavily limited by _______.

A
money
B
precipitation
C
raw water supplies
D
climate
24

In developed nations, the water delivered to homes by pipe is generally potable.

A
T
B
F
25

The principle reason that most of North America and Europe do not have difficulties with access to potable water is their wealth.

A
T
B
F
26

The world’s supply of freshwater is increasing.

A
T
B
F
27

Most people in cities get their water _______.

A
by supplying it themselves
B
by delivery through pipes
C
through private suppliers
D
all of the above
28

Which of the following best describes the availability of freshwater on Earth?

A
Less than 1% of Earth’s water is liquid freshwater.
B
More than two thirds of Earth’s freshwater is stored in glaciers and icecaps.
C
99% of liquid freshwater on Earth is stored as groundwater.
D
All of the above.
29

Which of the following most significantly determines a community's access to potable water?

A
access to clean raw water sources
B
the availability of money
C
local drought conditions
D
the level of industrial development
30

Which of the following best explains why humans need constant supplies of fresh water?

A
Humans need a constant supply of water to provide them with essential vitamins.
B
Humans need a constant supply of water to maintain proper hygiene.
C
Constant supplies of freshwater are needed because body water is continually being lost.
D
Constant supplies of freshwater are not actually necessary for survival.
31

Drinking non-potable water does not carry significant health risks.

A
T
B
F
32

Which of the following is least likely to have difficulties with economic access to potable water?

A
Zimbabwe
B
Australia
C
India
D
None of the above
33

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
34

Which of the following is a consequence of water polluted by human sewage?

A
pathogens
B
disease vectors
C
high levels of contaminants
D
all of the above
35

Lakes and rivers constitute _______.

A
87% of freshwater
B
a tiny fraction of Earth’s freshwater
C
a majority of Earth’s freshwater
D
a majority of water on earth
36

The amount of water a body requires for survival is dependent upon the climate and the individual’s level of physical activity.

A
T
B
F
37

Water intoxication occurs when _______.

A
the body’s electrolytes are out of balance
B
a person has a high body mass
C
in people engaged in low-impact activities
D
all of the above
38

The defining characteristic of potable water is that it _______.

A
is used as tap water
B
can be used for washing and irrigation
C
can be used and consumed without risk
D
is delivered through pipes
39

Which of the following human activities do not require water?

A
agriculture
B
household chores
C
industry
D
none of the above
40

Ocean water is sometimes referred to as saline water as it contains significant concentrations of dissolved salts. Please select the best answer from the choices provided

A
T
B
F

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Prescriptive Test — Unit test Answers — 26-27…