Question 1

Artesian wells are associated with confined aquifers.

Accepted Answer

A) True 
 B)False

Question 2

A(n) _________ aquifer is completely filled with water under pressure and is separated from the surface by an aquitard.

Accepted Answer

A)  non-economic 
B)  non-productive 
C)  confined 
D)  blind or buried 
E)  underpressured 
A)  non-economic 
B)  non-productive 
C)  confined 
D)  blind or buried 
E)  underpressured

Question 3

Groundwater is a major economic resource.

Accepted Answer

A) True 
 B)False

Question 4

A ________ is a place where water flows naturally from rocks onto the ground surface.

Accepted Answer

A)  ground-water sink 
B)  well 
C)  spring 
D)  capillary 
E)  bore 
A)  ground-water sink 
B)  well 
C)  spring 
D)  capillary 
E)  bore

Question 5

The _____ is the zone above the water table.

Accepted Answer

A)  replenishment zone 
B)  saturated zone 
C)  vadose zone 
D)  discharge zone 
E)  permeable zone 
A)  replenishment zone 
B)  saturated zone 
C)  vadose zone 
D)  discharge zone 
E)  permeable zone

Question 6

Heavy use of ground water can cause a region's water table to ____.

Accepted Answer

A)  flow faster 
B)  disappear 
C)  increase in thickness 
D)  rise toward the ground surface 
E)  drop to deeper depths 
A)  flow faster 
B)  disappear 
C)  increase in thickness 
D)  rise toward the ground surface 
E)  drop to deeper depths

Question 7

In unconfined aquifers water in shallow wells __.

Accepted Answer

A)  will rise to the ground surface and flow freely at the surface 
B)  will rise just to the ground surface, but will not flow 
C)  will rise to the level of the water table 
D)  will not rise beyond the base of the well 
E)  There is not enough information to answer this question. 
A)  will rise to the ground surface and flow freely at the surface 
B)  will rise just to the ground surface, but will not flow 
C)  will rise to the level of the water table 
D)  will not rise beyond the base of the well 
E)  There is not enough information to answer this question.

Question 8

An unconfined aquifer is recharged rapidly, whereas a confined aquifer recharges slowly.

Accepted Answer

A) True 
 B)False

Question 9

A deposit of loose sand may have a porosity of _____ percent.

Accepted Answer

A)  30-50 
B)  20-30 
C)  less than 20 
D)  40-50 
E)  more than 50 
A)  30-50 
B)  20-30 
C)  less than 20 
D)  40-50 
E)  more than 50

Question 10

The amount of fresh water stored in oceans is many times greater than the amount of ground water.

Accepted Answer

A) True 
 B)False

Question 11

Shale is a common _____ because it retards the flow of ground water.

Accepted Answer

A)  artesian aquifer 
B)  confined aquifer 
C)  aquifer 
D)  vadose rock 
E)  aquitard 
A)  artesian aquifer 
B)  confined aquifer 
C)  aquifer 
D)  vadose rock 
E)  aquitard

Question 12

Gasoline leaked from gas station storage tanks is less dense than water and can rise to the top of the water in an aquifer.

Accepted Answer

A) True 
 B)False

Question 13

Groundwater is important in the preservation of _____ which develops when porous buried wood is either filled in or replaced by inorganic silica carried in by ground water.

Accepted Answer

A)  preserved wood 
B)  petrified wood 
C)  petrified material 
D)  preserved material 
A)  preserved wood 
B)  petrified wood 
C)  petrified material 
D)  preserved material

Question 14

________ refers to the ability of a rock to transmit fluids.

Accepted Answer

A)  Porosity 
B)  Hydraulic head 
C)  Viscosity 
D)  Permeability 
E)  Void 
A)  Porosity 
B)  Hydraulic head 
C)  Viscosity 
D)  Permeability 
E)  Void

Question 15

The addition of new water to the saturated zone is called recharge.

Accepted Answer

A) True 
 B)False

Question 16

Gasoline leaking from an underground storage tank will __.

Accepted Answer

A)  evaporate entirely to the atmosphere 
B)  sink past the water table to mix with ground water 
C)  infiltrate to the top of the water table, on which it will float 
D)  sink to the bottom of the saturated zone without mixing 
E)  remain trapped in the soils around the tank 
A)  evaporate entirely to the atmosphere 
B)  sink past the water table to mix with ground water 
C)  infiltrate to the top of the water table, on which it will float 
D)  sink to the bottom of the saturated zone without mixing 
E)  remain trapped in the soils around the tank

Question 17

Deposits of calcite built up in caves by dripping water are called dripstone or speleothems.

Accepted Answer

A) True 
 B)False

Question 18

An area with many sinkholes and caves is said to have ___ topography.

Accepted Answer

A)  karst 
B)  decalcified 
C)  a subsidence-dominated 
D)  a wadi 
E)  cratered 
A)  karst 
B)  decalcified 
C)  a subsidence-dominated 
D)  a wadi 
E)  cratered

Question 19

______ is a deposit of calcite that forms around hot springs.

Accepted Answer

A)  Hematite 
B)  Quartz 
C)  Travertine 
D)  Stalactite 
E)  Sinter 
A)  Hematite 
B)  Quartz 
C)  Travertine 
D)  Stalactite 
E)  Sinter

Question 20

The hydraulic head is defined as __.

Accepted Answer

A)  the elevation of the water table 
B)  the pore fluid pressure 
C)  the velocity of water flow 
D)  the slope of the water table 
E)  elevation plus pore fluid pressure at a given point 
A)  the elevation of the water table 
B)  the pore fluid pressure 
C)  the velocity of water flow 
D)  the slope of the water table 
E)  elevation plus pore fluid pressure at a given point

Exam 11: Ground Water

Artesian wells are associated with confined aquifers.

A(n) _________ aquifer is completely filled with water under pressure and is separated from the surface by an aquitard.

Groundwater is a major economic resource.

A ________ is a place where water flows naturally from rocks onto the ground surface.

The _____ is the zone above the water table.

Heavy use of ground water can cause a region's water table to ____.

In unconfined aquifers water in shallow wells __.

An unconfined aquifer is recharged rapidly, whereas a confined aquifer recharges slowly.

A deposit of loose sand may have a porosity of _____ percent.

The amount of fresh water stored in oceans is many times greater than the amount of ground water.

Shale is a common _____ because it retards the flow of ground water.

Gasoline leaked from gas station storage tanks is less dense than water and can rise to the top of the water in an aquifer.

Groundwater is important in the preservation of _____ which develops when porous buried wood is either filled in or replaced by inorganic silica carried in by ground water.

________ refers to the ability of a rock to transmit fluids.

The addition of new water to the saturated zone is called recharge.

Gasoline leaking from an underground storage tank will __.

Deposits of calcite built up in caves by dripping water are called dripstone or speleothems.

An area with many sinkholes and caves is said to have ___ topography.

______ is a deposit of calcite that forms around hot springs.

The hydraulic head is defined as __.

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