The hydraulic gradient is a rock that is porous and permeable enough to transmit water easily. b the difference in hydraulic head between two points, divided by the distance between them. c rock that is low in permeability so that water flows very slowly through it. d a relationship of groundwater flow rate between two point to the difference in hydraulic head between them.
The hydraulic gradient is
|
a
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rock that is porous and permeable enough to transmit water easily. |
|
b
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the difference in hydraulic head between two points, divided by the distance between them. |
|
c
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rock that is low in permeability so that water flows very slowly through it. |
|
d
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a relationship of groundwater flow rate between two point to the difference in hydraulic head between them. |
2. An artesian well is one in which
|
a
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pressurized groundwater rises from a deep, unconfined aquifer. |
|
b
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water rises above the top of the confined aquifer without any pumping. |
|
c
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the well is horizontal and the water table is perched. |
|
d
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Paint colors are mixed. |
|
e
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the water is warm, fairly saline, and recharged by an affluent stream. |
3. A cone of depression is
|
a
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a solid or hollow object which tapers from a circular or roughly circular base to a point. |
|
b
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the relationship of groundwater flow rate between two points to the difference in hydraulic head between them. |
|
c
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an aquifer overlain by an aquitard or aquiclude. |
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d
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a large, cone-shaped lowering of the water table around a well when it is pumped. |
4. Karst is
|
a
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a terrain characterized by underground solution cavities that is usually made of limestone. |
|
b
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a waxy solid hydrocarbon in oil shale. |
|
c
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proportion of void space in rock, sediment or soil. |
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d
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a measure of how readily fluid can flow through a rock, sediment, or soil. |
5. The water table is the top of the zone of saturation.
| a | True |
| b | False |
6. Pumping ancient groundwater faster than it can be replenished
|
a
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is called groundwater mining. |
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b
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is not a problem because of the enormous reserves of ancient groundwater. |
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c
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is impossible. |
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d
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forms aquicludes. |
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e
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increases porosity in the intermediate zone. |
7. Saltwater intrusion is
|
a
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the movement of groundwater from the subsurface to the surface. |
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b
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a circular depression in the ground commonly caused by collapse of a cave. |
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c
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a process by which salt water replaces fresh groundwater when the fresh water is being used more rapidly. It is most common by the shoreline. |
| d |
the processes of infiltration and migration by which groundwater is replenished. |
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