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Chapter 11, Water as a Resource
Resources of the Earth
16
Other
Undergraduate 2
12/06/2009

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Term
Where riparian rights prevail, one who holds land adjacent to a stream can only take water from the stream if
Definition
there is no harm to other users
Term
The maximum amount of total dissolved solids considered acceptable for drinking water is
Definition
500 ppm.
Term
Under the proposed great Russian Water Diversion scheme water from the Black Sea will be
Definition
pumped onto the steppe
Term
Most of the free water (i.e., not bound in minerals) on the Earth is
Definition
in the oceans
Term
Most of the accessible freshwater on the Earth is
Definition
in the ground water system
Term
Most the non-saline water on the Earth is held in
Definition
the glaciers and ice caps
Term
Most of the world's annual precipitation:
Definition
evaporates before reaching the ocean as runoff.
Term
Worldwide, the zone of maximum precipitation lies
Definition
along the equator
Term
The effects of building dams include:
Definition
(1) reduction of flooding; (2) increased evaporation; (3) loss of natural habitat; (4) the potential for hydroelectric generation
Term
___________(1) is a natural event; (2) only occurs when humans have altered the environment; (3) is promoted by creating more impermeable areas; (4) is
aggravated by permitting construction along flood plains; and (5) can often be controlled by channelization
Definition
Flooding
Term
The two elements dissolved in sea water in greatest concentration are
Definition
Na + CI
Term
When a river is channelized:
Definition
(1) the rate of flow increases, and (2) the gradient increases.
Term
Distillation is being used more and more as a way to
Definition
make fresh water from sea water.
Term
The Central Arizona Project carries water from the Colorado River to
Definition
Tucson and Phoenix.
Term
The water problem that has developed in the Colorado River basin in recent years is
Definition
the allocation of greater amounts of water than exists in the river
Term
Where appropriation rights apply
Definition
(1) set amounts of water may be taken and used or sold only by those who hold the rights, and (2) if there is insufficient water to meet demands, earlier rights are honored over newer rights
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