Exam 19: A Hidden Reserve: Groundwater

List and describe one possible effect from overpumping.

Rock or sediment between the water table and the land surface represents a(n)________.

Rates of groundwater flow are ________ than stream flow because the water ________.

Topography dominated by depressions formed by the collapse of caves is termed a ________.

The hydraulic gradient in Darcy's Law is essentially the same as which of the following?

An impermeable layer of rock or sediment is a(n)________.

Consult the figure below.If someone were to dump chemicals into a dry river,what would happen to those chemicals?

The figure below shows the Dakota and Ogallala aquifers along with interlayered shale deposits.What likely occurred in the area to produce the alternating shale and sandstone layers?

The majority of large cave and karst systems have resulted from ________ etching into ________.

Any place where groundwater naturally flows out of the Earth's surface is termed a(n)________.

As a rule,groundwater always flows from areas of ________.

Where does the heat come from to create hot springs?

In many areas with karst terrain,people use sinkholes as places to dump garbage.What effect might this practice have on the groundwater supply?

If a material is highly permeable,it ________.

Land subsidence is likely when ________.

Unfractured vesicular basalt has ________ porosity and ________ permeability.

Vesicular basalt has high porosity.Would this basalt then make a good aquifer? Why or why not?

A(n)________ aquifer is more likely to be contaminated than a(n)________ aquifer.

Imagine that some of the wells around a city have begun to show elevated levels of a toxic substance.Without knowing what the toxic substance is,how can you determine what the source of the chemicals might be?

On the image below,identify the regions of discharge and recharge,and label the water table.Then draw arrows showing the flow of groundwater.