Groundwater Answers

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What is a possible long-term consequence of groundwater overdraft?

increased vegetation

unproductive wells

polluted groundwater

higher water tables

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Over half of the people in the United States rely on groundwater for drinking water.

The use of wells to obtain drinking water is a modern convenience.

Why has groundwater use increased?

the total amount of freshwater has decreased

more of the available freshwater is stored in glaciers and icecaps

governments have banned the use of freshwater in rivers and springs

the demand for freshwater has increased due to population growth

Groundwater is only found below the water table.

Which of the following factors does not influence the level of the water table?

pumping

time of year

pollution

none of the above

How does groundwater become polluted?

Pollutants mixed with water pass through permeable layers above the aquifer.

Factories dump their waste directly into aquifers.

Refuse infiltrates the water table when garbage is dumped.

All of the above

How is groundwater replenished?

precipitation

streams

rivers

all of the above

Why is groundwater an important source of freshwater storage?

It constitutes approximately 30% of Earth’s freshwater.

It is the only viable source of freshwater in some areas.

It is available in conditions of drought.

All of the above

How did the use of groundwater change from preindustrial times to industrial times?

Groundwater use decreased from preindustrial times to industrial times.

Groundwater use increased from preindustrial times to industrial times.

Groundwater use remained virtually the same from preindustrial to industrial times.

Groundwater was not used during preindustrial times.

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