Groundwater by LegitSwag69 – Flashcards
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A
answer
Human use of groundwater has _______ over time.
a.
increased
b.
decreased
c.
decreased and then increased
d.
remained the same
Please select the best answer from the choices provided
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C
answer
Groundwater overdraft occurs when _______.
a.
the location of the water table changes due to season
b.
aquifers become polluted
c.
the rate of use exceeds the rate of replenishment
d.
trees are planted
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question
The principal reason for the increase of groundwater use is the increasing population. Urbanization and pollution have both contributed to an increase in the use of groundwater. Polluted rivers, lakes, and springs are no longer viable sources of groundwater. Urbanization has concentrated large populations in areas that might not have direct access to surface water or that might have a larger demand for freshwater than surface water can supply.
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Why has groundwater use increased over time?
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Groundwater was used in preindustrial times, but was less widely used than in industrial times. With urbanization and increasing populations, the use of groundwater increased in industrial times to meet the increased demands for freshwater. People in preindustrial times were more likely to settle near sources of surface water.
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Compare the use of groundwater in preindustrial times to industrial times.
question
D
answer
Aquifers are _______.
a.
located below the water table
b.
important sources of freshwater
c.
located in the saturated zone
d.
all of the above
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Groundwater overdraft occurs when the groundwater resources are used up more quickly than they are replenished. Groundwater overdraft can occur for a period of time without noticeable consequences, but eventually the aquifer will not be able to keep up with the rate of use as its water storage is depleted. This leads to unproductive or even dried up wells.
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Explain how groundwater overdraft occurs and its likely consequences.
question
C
answer
Which of the following is not a source of groundwater pollution?
a.
landfills
b.
septic tanks
c.
smoke stacks
d.
fertilizer
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question
C
answer
What approximate percentage of the Earth's freshwater is groundwater?
a.
10%
b.
20%
c.
30%
d.
40%
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Groundwater is an important source of freshwater, partly because it accounts for approximately 30% of the Earth's freshwater. Groundwater is an important source of freshwater for areas that do not have access to other sources of freshwater, such as areas that are experiencing droughts.
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Explain the importance of groundwater as a source of freshwater.
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Groundwater is used for drinking, irrigation, mining, industry, and recreation.
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What are some ways that groundwater is used in the United States currently?
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C
answer
What happens if the use of groundwater exceeds the rate of replenishment?
a.
the depth of the water table increases
b.
the water table is more likely to be polluted
c.
the depth of the water table decreases
d.
the water table remains unchanged
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question
D
answer
Why has groundwater use increased?
a.
the total amount of freshwater has decreased
b.
more of the available freshwater is stored in glaciers and icecaps
c.
governments have banned the use of freshwater in rivers and springs
d.
the demand for freshwater has increased due to population growth
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question
D
answer
How is groundwater replenished?
a.
precipitation
b.
streams
c.
rivers
d.
all of the above
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question
B
answer
How did the use of groundwater change from preindustrial times to industrial times?
a.
Groundwater use decreased from preindustrial times to industrial times.
b.
Groundwater use increased from preindustrial times to industrial times.
c.
Groundwater use remained virtually the same from preindustrial to industrial times.
d.
Groundwater was not used during preindustrial times.
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question
C
answer
Which of the following factors does not influence the level of the water table?
a.
pumping
b.
time of year
c.
pollution
d.
none of the above
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question
T
answer
The location of the water table is subject to change.
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question
C
answer
The largest amount of groundwater is used for _______.
a.
drinking
b.
washing
c.
irrigation
d.
industry
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question
B
answer
What is a possible long-term consequence of groundwater overdraft?
a.
increased vegetation
b.
unproductive wells
c.
polluted groundwater
d.
higher water tables
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question
A
answer
How does groundwater become polluted?
a.
Pollutants mixed with water pass through permeable layers above the aquifer.
b.
Factories dump their waste directly into aquifers.
c.
Refuse infiltrates the water table when garbage is dumped.
d.
All of the above
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question
D
answer
Why is groundwater an important source of freshwater storage?
a.
It constitutes approximately 30% of Earth's freshwater.
b.
It is the only viable source of freshwater in some areas.
c.
It is available in conditions of drought.
d.
All of the above
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question
F
answer
The use of wells to obtain drinking water is a modern convenience.
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NOT D
answer
The Karez well system _______.
a.
was the first known use of wells
b.
was a postindustrial system
c.
transported groundwater from a distance
d.
all of the above
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NOT D
answer
Water stored above the water table _______.
a.
surrounds the rock particles, leaving air between them
b.
fills all available spaces
c.
is inaccessible to plant life
d.
all of the above
Please select the best answer from the choices provided
