Earth Science: Geology, the Environment, and the Universe

Section 4: Water Resources

Water Resources

1
How can freshwater runoff be controlled?
A)dams
B)aquifers
C)glacial lakes
D)wells
2
__________ has unique properties that allow life to exist on Earth.
A)Nitrogen
B)Water
C)Methane
D)Carbon dioxide
3
What number of the world's countries experience chronic water shortages?
A)25
B)5
C)125
D)100
4
According to the figure, why might it be harmful to a small seawater environment to receive too much rain?
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A)rainwater is just pure water
B)rainwater is the same pH as seawter
C)rainwater is too acidic
D)rainwater is too basic
5
According to the graph, which year saw the highest usage of water for irrigation?
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A)1950
B)1990
C)1980
D)1960
6
What is water used most for, according to the graph?
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A)irrigation
B)public supply
C)electricity
D)industry
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