Question 1

The elevation of the water table ____________.

Accepted Answer

A)  is a constant for a given area so long as the topography remains the same 
B)  may rise during times of drought and sink during rainy periods 
C)  may rise during rainy periods and sink during droughts 
A)  is a constant for a given area so long as the topography remains the same 
B)  may rise during times of drought and sink during rainy periods 
C)  may rise during rainy periods and sink during droughts C

Question 2

The rate of groundwater flow through a body of rock or sediment depends ____________.

Accepted Answer

A)  only on the slope of the water table locally 
B)  only on the porosity of the rock or sediment 
C)  on the slope of the water table and the porosity of the rock or sediment 
D)  on the slope of the water table and the permeability of the rock or sediment 
A)  only on the slope of the water table locally 
B)  only on the porosity of the rock or sediment 
C)  on the slope of the water table and the porosity of the rock or sediment 
D)  on the slope of the water table and the permeability of the rock or sediment D

Question 3

Water flowing from hot springs ____________.

Accepted Answer

A)  contains more dissolved minerals than water flowing from cool springs 
B)  contains fewer dissolved minerals than water flowing from cool springs 
C)  is never hotter than 40°C, so it is always safe to bathe in 
D)  only occurs in regions of active volcanism 
A)  contains more dissolved minerals than water flowing from cool springs 
B)  contains fewer dissolved minerals than water flowing from cool springs 
C)  is never hotter than 40°C, so it is always safe to bathe in 
D)  only occurs in regions of active volcanism A

Question 4

Extensive pumping of fresh groundwater from a coastal aquifer can induce ____________.

Accepted Answer

A)  saline intrusion; with time the well will start to deliver saline water 
B)  saline expulsion; with time the freshwater/saline water interface within the aquifer will be pushed downward and seaward 
A)  saline intrusion; with time the well will start to deliver saline water 
B)  saline expulsion; with time the freshwater/saline water interface within the aquifer will be pushed downward and seaward

Question 5

In unfractured rock and sediment,water molecules usually take a ____________.

Accepted Answer

A)  straight path 
B)  wandering path 
C)  circular path 
A)  straight path 
B)  wandering path 
C)  circular path

Question 6

An ordinary (water-producing)well will result whenever the base of the well extends below the water table.

Accepted Answer

A) True 
 B)False

Question 7

Bioremediation of contaminated groundwater involves ____________.

Accepted Answer

A)  introducing laboratory-cultured viruses that can dissolve the plume 
B)  pumping oxygen and nutrients into a contaminant plume to help local bacteria metabolize the plume 
C)  pumping out the contaminated groundwater and using it to irrigate genetically modified crops 
A)  introducing laboratory-cultured viruses that can dissolve the plume 
B)  pumping oxygen and nutrients into a contaminant plume to help local bacteria metabolize the plume 
C)  pumping out the contaminated groundwater and using it to irrigate genetically modified crops

Question 8

Material through which water readily flows is termed ____________.

Accepted Answer

A)  fluent 
B)  porous 
C)  permeable 
A)  fluent 
B)  porous 
C)  permeable

Question 9

A layer of rock or sediment with exceptionally low permeability is termed a(n)____________ in hydrogeologic contexts.

Accepted Answer

A)  aquitard 
B)  confined aquifer 
C)  unconfined aquifer 
D)  unsaturated zone 
A)  aquitard 
B)  confined aquifer 
C)  unconfined aquifer 
D)  unsaturated zone

Question 10

If groundwater is clear,it can be assumed that it is drinkable.

Accepted Answer

A) True 
 B)False

Question 11

Perched water tables occur ____________.

Accepted Answer

A)  above the regional water table, within permeable rock or sediment 
B)  above the regional water table, within impermeable rock or sediment 
C)  below the regional water table, within impermeable rock or sediment 
D)  below the regional water table, within permeable rock or sediment 
A)  above the regional water table, within permeable rock or sediment 
B)  above the regional water table, within impermeable rock or sediment 
C)  below the regional water table, within impermeable rock or sediment 
D)  below the regional water table, within permeable rock or sediment

Question 12

Groundwater ____________.

Accepted Answer

A)  does not affect the porosity of the rock and sediment through which it flows 
B)  uniformly increases porosity due to dissolution of grains 
C)  uniformly decreases porosity due to deposition of minerals into pores 
D)  may increase or decrease porosity through dissolution or deposition 
A)  does not affect the porosity of the rock and sediment through which it flows 
B)  uniformly increases porosity due to dissolution of grains 
C)  uniformly decreases porosity due to deposition of minerals into pores 
D)  may increase or decrease porosity through dissolution or deposition

Question 13

In a humid climate,the topography of the water table ____________.

Accepted Answer

A)  is unaffected by local surface topography 
B)  precisely mimics the topography of the ground surface 
C)  is a subdued (less steeply sloping) mimic of surface topography 
D)  is an exaggerated (more steeply sloping) mimic of surface topography 
A)  is unaffected by local surface topography 
B)  precisely mimics the topography of the ground surface 
C)  is a subdued (less steeply sloping) mimic of surface topography 
D)  is an exaggerated (more steeply sloping) mimic of surface topography

Question 14

A periodic explosive eruption of steam and water from within the ground up through the surface is termed a ____________.

Accepted Answer

A)  flowing artesian well 
B)  geyser 
C)  spring 
D)  recharge area 
A)  flowing artesian well 
B)  geyser 
C)  spring 
D)  recharge area

Question 15

If a material is porous,it ____________.

Accepted Answer

A)  will be permeable as well 
B)  will be impermeable 
C)  may be permeable or impermeable 
A)  will be permeable as well 
B)  will be impermeable 
C)  may be permeable or impermeable

Question 16

An artesian well is one that ____________.

Accepted Answer

A)  induces an upward flow of groundwater without any pumping 
B)  has its intake sited within the saturated zone of an unconfined aquifer 
C)  has its intake sited within the unsaturated zone of an unconfined aquifer 
D)  has its recharge area at an elevation below sea level 
A)  induces an upward flow of groundwater without any pumping 
B)  has its intake sited within the saturated zone of an unconfined aquifer 
C)  has its intake sited within the unsaturated zone of an unconfined aquifer 
D)  has its recharge area at an elevation below sea level

Question 17

Rock or sediment with water-filled pores,wherein upward percolation is blocked by an overlying,impermeable layer,is termed a(n)____________.

Accepted Answer

A)  aquitard 
B)  confined aquifer 
C)  unconfined aquifer 
D)  unsaturated zone 
A)  aquitard 
B)  confined aquifer 
C)  unconfined aquifer 
D)  unsaturated zone

Question 18

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

Accepted Answer

A)  valley and ridge 
B)  karst 
C)  horst and graben 
A)  valley and ridge 
B)  karst 
C)  horst and graben

Question 19

Unconsolidated sediment typically has greater porosity than the lithified rock that forms from it.

Accepted Answer

A) True 
 B)False

Question 20

Primary porosity may be reduced by the ____________.

Accepted Answer

A)  compaction of grains 
B)  cementation of grains 
C)  Both A and B are correct. 
D)  None of the above is correct. 
A)  compaction of grains 
B)  cementation of grains 
C)  Both A and B are correct. 
D)  None of the above is correct.

The elevation of the water table ____________.

The rate of groundwater flow through a body of rock or sediment depends ____________.

Water flowing from hot springs ____________.

Extensive pumping of fresh groundwater from a coastal aquifer can induce ____________.

In unfractured rock and sediment,water molecules usually take a ____________.

An ordinary (water-producing)well will result whenever the base of the well extends below the water table.

Bioremediation of contaminated groundwater involves ____________.

Material through which water readily flows is termed ____________.

A layer of rock or sediment with exceptionally low permeability is termed a(n)____________ in hydrogeologic contexts.

If groundwater is clear,it can be assumed that it is drinkable.

Perched water tables occur ____________.

Groundwater ____________.

In a humid climate,the topography of the water table ____________.

A periodic explosive eruption of steam and water from within the ground up through the surface is termed a ____________.

If a material is porous,it ____________.

An artesian well is one that ____________.

Rock or sediment with water-filled pores,wherein upward percolation is blocked by an overlying,impermeable layer,is termed a(n)____________.

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

Unconsolidated sediment typically has greater porosity than the lithified rock that forms from it.

Primary porosity may be reduced by the ____________.

The Earth in Context

The Way the Earth Works: Plate Tectonics

Patterns in Nature: Minerals

Up From the Inferno: Magma and Igneous Rocks

The Wrath of Vulcan: Volcanic Eruptions

Pages of Earths Past: Sedimentary Rocks

Metamorphism: a Process of Change

A Violent Pulse: Earthquakes

Crags, cracks, and Crumples: Crustal Deformation and Mountain Building

Deep Time: How Old Is Old

A Biography of Earth

Riches in Rock: Energy and Mineral Resources

Unsafe Ground: Landslides and Other Mass Movements

Running Water: the Geology of Streams and Floods

Restless Realm: Oceans and Coasts

Dry Regions: the Geology of Deserts

Amazing Ice: Glaciers and Ice Ages

Global Change in the Earth System

Filters

Exam 16: A Hidden Reserve: Groundwater

The elevation of the water table ____________.

The rate of groundwater flow through a body of rock or sediment depends ____________.

Water flowing from hot springs ____________.

Extensive pumping of fresh groundwater from a coastal aquifer can induce ____________.

In unfractured rock and sediment,water molecules usually take a ____________.

An ordinary (water-producing)well will result whenever the base of the well extends below the water table.

Bioremediation of contaminated groundwater involves ____________.

Material through which water readily flows is termed ____________.

A layer of rock or sediment with exceptionally low permeability is termed a(n)____________ in hydrogeologic contexts.

If groundwater is clear,it can be assumed that it is drinkable.

Perched water tables occur ____________.

Groundwater ____________.

In a humid climate,the topography of the water table ____________.

A periodic explosive eruption of steam and water from within the ground up through the surface is termed a ____________.

If a material is porous,it ____________.

An artesian well is one that ____________.

Rock or sediment with water-filled pores,wherein upward percolation is blocked by an overlying,impermeable layer,is termed a(n)____________.

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

Unconsolidated sediment typically has greater porosity than the lithified rock that forms from it.

Primary porosity may be reduced by the ____________.

The Earth in Context

The Way the Earth Works: Plate Tectonics

Patterns in Nature: Minerals

Up From the Inferno: Magma and Igneous Rocks

The Wrath of Vulcan: Volcanic Eruptions

Pages of Earths Past: Sedimentary Rocks

Metamorphism: a Process of Change

A Violent Pulse: Earthquakes

Crags, cracks, and Crumples: Crustal Deformation and Mountain Building

Deep Time: How Old Is Old

A Biography of Earth

Riches in Rock: Energy and Mineral Resources

Unsafe Ground: Landslides and Other Mass Movements

Running Water: the Geology of Streams and Floods

Restless Realm: Oceans and Coasts

Dry Regions: the Geology of Deserts

Amazing Ice: Glaciers and Ice Ages

Global Change in the Earth System

Filters