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Why are water sources being depleted?
b. greater population and industrial processes
What percent of the Earth is ground water?
How much more of the Earth's water is stored in glaciers then in fresh water strams and land lakes?
e. 120 times more
From what sources do most ground water originate?
Who quantitatively proved the origin of groundwater?
b. Pierre Perault
What distance beneath the surface of the Earth is the deepest that anyone has found groundwater?
Why is groundwater found deeper than 750 meters not very useful?
d. The high pressure and small openings prevent flow.
The unsaturated zone is also called the
b. zone of aeration
All of the following statements about the water table are true except
c. when diggin a well, the water table is the first water one contacts
Where is one most likely going to have to drill the deepest to find the water table?
d. northern africa
In very humid climates,
a. the water table imitates the surface topography
Capillary attraction refers to the
b. suction created in the vacuum-like unsaturaed zone
Who wrote "Groundwater"?
c. Brain J. Skinner
How many meters deep would groundwater go if it were distributed evenly over all the land on earth?
Which of the following events would not occur in times of extreme drought?
c. capillary fringe disappears
Where was the deepest source of water found?
a. Kola Peninsula
Which river basin was tested to prove the source of groundwater?
Early cities increased water resouces by digging wells and
The maxium thickness of the capillary fringe is
c. 60 cm
The author of "Groundwater" compares capillary action to
kerosene through the wick of a lamp
Ground water 1 (beginning - water table)