The Water We Use Answers

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1
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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.
2
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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
3

Which of the following human activities do not require water?

A
agriculture
B
household chores
C
industry
D
none of the above
4

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
5

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.
7

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
8

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
10

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
13

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

A
T
B
F
14

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
16

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.
17

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
18

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
19

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
20

The world’s supply of freshwater is increasing.

A
T
B
F

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