Set of Questions and Answers for SWS Exam 2 Verified
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Course
SWS
Institution
SWS
Set of Questions and Answers for SWS
Exam 2 Verified
approximate % of rainfall that falls on land - CORRECT ANSWER-10%
what is a watershed - CORRECT ANSWER-total land area that drains surface water to
a common point
what is the largest water shed on earth, what % of freshwater...
consolidated aquifers - CORRECT ANSWER--sandstone, limestone, granite
-water held in cracks, fissures, erosion, cavities and seams in sold rock
-slowly recharged
what is the most important aquifer in the U.S.? Is it consolidated or unconsolidated? -
CORRECT ANSWER-Ogalala Aquifer; unconsolidated
what is permeability - CORRECT ANSWER-ability of geologic or soil materials to
transmit water
low permeability - CORRECT ANSWER-slow water movement
high permeability - CORRECT ANSWER-rapid water movement
confined aquifer - CORRECT ANSWER--water bearing formation located between
impermeable layers of clay rock or shale
-water movement restricted by the impermeable, confining unit, recharged at surface
where the upper confining unit is thin or absent
unconfined aquifer - CORRECT ANSWER--surficial aquifer
-open to surface
-confined at greater depth by low permeable material
-rainfall recharge
what is water mining - CORRECT ANSWER-moving more water out of the aquifer than
is being replaced, causing deficits in the aquifer
what country has the largest percentage on non renewable water use - CORRECT
ANSWER-saudi arabia
what is the number one use for groundwater in the US - CORRECT ANSWER-irrigation
for agriculture
what is the central arizona project - CORRECT ANSWER-335 mile canal that runs from
the colorado river to supply water to tuscon and pheonix, AR. about 4 billion gallons a
year, loses about 7% to evaporation
how does floridas groundwater use compare with that of the US - CORRECT ANSWER-
FL: 64%
US: 21%
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