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Online Quiz
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1
Ground water flow is described by this law:
A)Ohm's Law
B)D'Arcy's Law
C)Hooke's Law
D)Newton's Law
2
Springs (or flowing wells)
A)occur in the zone of aeration
B)result from overland flow
C)occur where the zone of saturation reaches the surface
D)cause groundwater recharge
3
Which would make the best aquifer?
A)gravel in the zone of aeration
B)clay in the zone of saturation
C)sandstone in the zone of saturation
D)unfractured granite in the zone of saturation
4
An aquifer
A)has high permeability and low porosity
B)has high porosity and low permeability
C)has both high permeability and high porosity
D)has both low permeability and low porosity
5
Which is an example of an aquitard?
A)gravel
B)shale
C)sandstone
D)sand and gravel
6
Karst topography develops
A)as a result of solution of limestone
B)when limestone caverns collapse
C)as a result of the reaction of carbonic acid in rain with calcite
D)all of the above
7
Permeability is
A)the amount of pore space in a rock or soil
B)the ease with which water moves through an earth material
C)determined only by grain size of an earth material
D)the ease with which the volume of soil is decreased by compaction
8
Subsidence in a region of karst topography produces
A)caverns
B)sinkholes
C)deltas
D)all of the above
9
The water table is the
A)top of the zone of saturation
B)bottom of the zone of saturation
C)top of the zone of aeration
D)zone of infiltration
10
Groundwater flow is faster in materials with
A)higher permeability
B)higher porosity
C)higher compressibility
D)all of the above
11
A confined aquifer is
A)shale
B)the same as a perched water table
C)able to produce artesian conditions
D)all of the above
12
Which is an advantage of surface water over groundwater as a source of water supply?
A)it usually requires less purification
B)its flow rate is often more rapid
C)it can be found anywhere
D)all of the above
13
What is the porosity of 100 milliliters of sand that absorbs 25 milliliters of water?
A)2.5%
B)4%
C)25%
D)40%
14
Which is the greatest consumptive use of water?
A)irrigation
B)industrial use
C)hydroelectric
D)public supply
15
Groundwater is utilized most extensively for
A)irrigation
B)industrial use
C)hydroelectric
D)public supply
16
If more ground water is pumped than what is recharged, this can occur
A)a drought
B)ground subsidence
C)local streams will increase in flow
D)local streams will decrease in flow
17
The largest amount of unfrozen fresh water is in
A)lakes and streams
B)groundwater
C)atmosphere
D)oceans
18
The largest amount of fresh water is in
A)lakes and streams
B)groundwater
C)glacier ice
D)oceans
19
An unconfined aquifer lacks a(n)
A)water table
B)aquitard above
C)recharge area
D)zone of saturations
20
A potentiometric surface occurs in a(n)
A)confined aquifer
B)aquitard
C)unconfined aquifer
D)all of the above
21
Saltwater intrusion can occur in coastal aquifers
A)if sea level drops over time.
B)if the freshwater there is over-pumped.
C)when salt water flows in from above.
D)only in extreme droughts.
22
Hard water contains high amounts of
A)sodium chloride
B)magnesium and calcium
C)sulfate
D)rocks
23
Groundwater mining
A)creates perched water tables.
B)lowers the water table.
C)digs out the water instead of pumping it.
D)reduces the zone of aeration.
24
The Los Angeles Aqueduct project uses over 200 miles of canals and tunnels to
A)collect water from the mountains.
B)transfer water to orange groves.
C)move sea water for desalination.
D)transfer water from the Colorado River.
25
According to Darcy's Law, groundwater flow is faster when
A)the slope of the water table creates high hydraulic head.
B)the depth of the water table decreases hydraulic head.
C)the shape of the water table decreases permeability.
D)the water table lowers the hydraulic conductivity.







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