Question 1

If a well has a cone of depression associated with it because of overpumping of the groundwater, what is a possible consequence?

Accepted Answer

A)   Groundwater, which may contain pollutants, will flow toward the cone of depression and cause a polluted well.
B)   Groundwater, which may contain pollutants, will flow away from the cone of depression and the well will be safe from pollution.
C)   Any pollutants in the flowing groundwater will be filtered out before reaching the cone of depression.D) None of the above
E) A) and C)

Question 2

Collapse of the roof of a cave can produce a:

Accepted Answer

A)   sinkhole
B)   stalagmite
C)   caldera
D)   travertine formation
E)   stalactiteF) A) and C)
G) All of the above

Question 3

Which of the following features is NOT formed by precipitation of calcite from water?

Accepted Answer

A)   travertine
B)   stalagmite
C)   stalactite
D)   sinkhole
E)   flowstoneF) A) and E)
G) A) and D)

Question 4

Which of the sites on this cross section would be the most likely place for a spring?

Accepted Answer

A)   A
B)   B
C)   C
D)   DE) None of the above
F) A) and D)

Question 5

What is a possible way to decrease permeability?

Accepted Answer

A)   seal fractures with clays and other minerals
B)   fill pores between grains with clays and other fine-grained materials
C)   fill pores with natural cement
D)   all of these
E)   none of theseF) A) and B)
G) A) and C)

Question 6

Which of the following materials probably has the lowest permeability?

Accepted Answer

A)   highly fractured granite
B)   compacted clay with abundant tiny pore spaces
C)   loosely cemented, well-sorted sediment
D)   loosely cemented, well-rounded sand grainsE) A) and D)
F) A) and C)

Question 7

Using the graph below, which point letter)  represents the strongest signal for strength of gravity?

Accepted Answer

A)   A
B)   B
C)   C
D)   DE) None of the above
F) All of the above

Question 8

Each number on this figure refers to a location with groundwater in a subsurface material that is consistent in character across the entire figure. Of these locations, which would likely have the fastest groundwater flow?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   5F) A) and E)
G) B) and D)

Question 9

Which of the following are sources of groundwater contaminates?

Accepted Answer

A)   landfills
B)   service stations
C)   ranches
D)   all of theseE) A) and B)
F) A) and C)

Question 10

The slope of a water table is also called the:

Accepted Answer

A)   hydraulic gradient
B)   groundwater divide
C)   aquifer divide
D)   groundwater gradientE) None of the above
F) B) and D)

Question 11

Which of these numbered features contains the least amount of Earth's water?

Accepted Answer

A)   1-ocean
B)   2-atmosphere
C)   3-glaciers and ice sheets
D)   4-groundwater
E)   5-lakesF) A) and E)
G) A) and C)

Question 12

Which of the following materials probably has the highest porosity?

Accepted Answer

A)   dry, uncompacted clay particles
B)   granite with few fractures but very large crystals
C)   a limestone that has a few percent open cavities
D)   poorly sorted sedimentE) A) and B)
F) None of the above

Question 13

Which of the following geologic materials usually has the highest permeability?

Accepted Answer

A)   Loosely cemented gravel and sand
B)   Shales and similar types of rocks
C)   Vesicular volcanic rockD) A) and B)
E) None of the above

Question 14

Using the figure shown of a contour map of groundwater locations, determine the general direction of the groundwater flow.

Accepted Answer

A)   South
B)   North
C)   East
D)   WestE) A) and B)
F) A) and C)

Question 15

Which of the following would NOT be a preferred characteristic of a good aquifer?

Accepted Answer

A)   high permeability
B)   high porosity
C)   unsaturated pores
D)   all of theseE) A) and C)
F) None of the above

Question 16

Which of the following materials has low to moderate porosity but high permeability?

Accepted Answer

A)   fractured granite
B)   compacted clays
C)   uncompacted clays
D)   well-sorted sedimentE) C) and D)
F) B) and C)

Question 17

Many caves form below the water table. In addition, dissolution of groundwater over millions of years can create caves and caverns in:

Accepted Answer

A)   limestone
B)   granite
C)   magmaD) None of the above
E) A) and B)

Question 18

Which of the following are settings where surface water becomes groundwater?

Accepted Answer

A)   a spring
B)   a river that is higher than the water table
C)   where an impermeable unit lies at the surface
D)   all of these
E)   none of theseF) A) and D)
G) B) and E)

Question 19

This cross section shows the location of 5 wells and the water table? Which well is most likely to be an artesian well?

Accepted Answer

A)   well A
B)   well B
C)   well C
D)   well D
E)   well EF) B) and E)
G) B) and C)

Question 20

Which of the following is most similar in volume to an acre-foot of water?

Accepted Answer

A)   20 million gallons
B)   9 football fields covered with one-tenth of a foot of water
C)   an acre covered with 3 feet 1 meter)  of water
D)   a square mile covered with 1 foot of waterE) A) and D)
F) All of the above

Exam 17: Water Resources

Many caves form below the water table. In addition, dissolution of groundwater over millions of years can create caves and caverns in:

Correct AnswerverifiedShow Answer

Which of the following would NOT be a preferred characteristic of a good aquifer?

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Using the graph below, which point letter) represents the strongest signal for strength of gravity?

Correct AnswerverifiedShow Answer

Which of the sites on this cross section would be the most likely place for a spring?

Correct AnswerverifiedShow Answer

Which of the following materials probably has the highest porosity?

Correct AnswerverifiedShow Answer

Which of the following are sources of groundwater contaminates?

Correct AnswerverifiedShow Answer

Collapse of the roof of a cave can produce a:

Correct AnswerverifiedShow Answer

Which of the following geologic materials usually has the highest permeability?

Correct AnswerverifiedShow Answer

Which of the following features is NOT formed by precipitation of calcite from water?

Correct AnswerverifiedShow Answer

Which of these numbered features contains the least amount of Earth's water?

Correct AnswerverifiedShow Answer

Which of the following materials probably has the lowest permeability?

Correct AnswerverifiedShow Answer

Which of the following materials has low to moderate porosity but high permeability?

Correct AnswerverifiedShow Answer

The slope of a water table is also called the:

Correct AnswerverifiedShow Answer

If a well has a cone of depression associated with it because of overpumping of the groundwater, what is a possible consequence?

Correct AnswerverifiedShow Answer

What is a possible way to decrease permeability?

Correct AnswerverifiedShow Answer

Which of the following is most similar in volume to an acre-foot of water?

Correct AnswerverifiedShow Answer

Using the figure shown of a contour map of groundwater locations, determine the general direction of the groundwater flow.

Correct AnswerverifiedShow Answer

This cross section shows the location of 5 wells and the water table? Which well is most likely to be an artesian well?

Correct AnswerverifiedShow Answer

Each number on this figure refers to a location with groundwater in a subsurface material that is consistent in character across the entire figure. Of these locations, which would likely have the fastest groundwater flow?

Correct AnswerverifiedShow Answer

Which of the following are settings where surface water becomes groundwater?

Correct AnswerverifiedShow Answer

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