Which of the following represent the largest volume of freshwater found on Earth?
ice sheets and glaciers
Which of the following is a true statement about groundwater?
Water in a groundwater system is stored in subsurface pore spaces and fractures.
In the __________, groundwater fills the pore space.
zone of saturation
The water table __________.
surface is a subdued version of the surface topography
A __________ is separated from the groundwater system by the unsaturated zone.
losing stream (disconnected)
Groundwater flows from __________.
high to low pressure areas
Which of the following is necessary to calculate hydraulic gradient?
the distance between two wells that penetrate the zone of saturation
A perched aquifer is located directly above a(n) __________.
Which of the following is true regarding groundwater as you move deeper below the surface?
Groundwater moves over larger distances, over longer timescales.
Which of the following best describes the cone of depression?
a dimple in the water table surface due to water pumped faster than an aquifer can be replenished
To ensure a continuous supply of water, a well must do what?
penetrate well below the regional water table surface
When water is pumped from a well, drawdown occurs. Which of the following is a true statement regarding drawdown?
Drawdown decreases with increasing distance from the well.
The cone of depression __________ near a well.
increases the hydraulic gradient
In which situation does the cone of depression need to be taken into account?
A well for industrial purposes is drilled proximal to a smaller, domestic well.
An artesian system is present when groundwater __________.
under pressure rises above the aquifer level
A __________ is located where the pressure surface is above the aquifer, but below the ground.
nonflowing artesian well
If a well is drilled into an aquifer where the pressure surface is both above the aquifer and the ground, a __________ is formed.
flowing artesian well
Which of the following is a requirement for an artesian system to exist?
Aquitards must be present both above and below the aquifer
As shown by the South Dakota example, artesian systems __________.
are able to transmit water great distances from recharge to discharge areas
What percentage of the Earth's water is in the form of groundwater?
Which of the following materials is most readily dissolved by water?
The majority of groundwater occurs as underground rivers.
Which of the following has the highest permeability?