EES2.3.2

Which of the following IS NOT true about groundwater?

• Groundwater is the largest freshwater source on Earth.

• Groundwater is freshwater beneath Earth’s surface.

• Groundwater is the largest liquid freshwater source for humans.

• Groundwater can maintain streamflow during times of drought.

Much of the water that flows in river systems is direct runoff from precipitation.

• True

• False

Groundwater is thus a form of _________that _______________ streams during periods when rain does not fall.

• storage, sustains

• precipitation, dehydrates

• saltwater, dries up

• mineral, lithifies

Which of the following implies the same thing as the word "aquifer"?

• zone of saturation

• zone of aeration

• zone of soil moisture

• zone of twilight

The top of an aquifer is known as:

• the water table.

• an artesian well.

• the hydraulic gradient.

• a geyser.

What does the quantity of groundwater that can be stored depend upon?

• It depends upon the porosity of the underground rock.

• It depends upon the pH of the groundwater.

• It depends upon the underground depth of the storage system.

• It depends upon the temperature of the underground rock.

A place where the water table intersects the ground surface and where a natural flow of groundwater results is called:

• a spring.

• a geyser.

• an aquatard.

• a fissure.

What is the most common method for removing groundwater?

• a well bored into the zone of saturation

• accessing the water table by use of low-grade explosives

• building a water tower

• damming up a river

Geologically, groundwater is important as an agent of:

• erosion

• deposition

• lithification

• subduction

What would cause the water table to lower?

• High rates of evaporation and transpiration

• Low rates of evaporation and transpiration

• Increasing amounts of runoff

• A heavy rainstorm with a lot of precipitation