Question 1

Where on this cross section would water at the surface infiltrate to become groundwater?

Accepted Answer

A)  1,2,and 3
B)  1 and 3
C)  2 and 4
D)  2 only
E)  4 onlyF) B) and E)
G) D) and E)

Question 2

Which two uses consume most freshwater in the United States?

Accepted Answer

A)  drinking water and showering
B)  mining and raising livestock
C)  irrigation and drinking water
D)  mining and industrial use
E)  thermoelectric power and irrigationF) None of the above
G) A) and B)

Question 3

What is the most common way in which sinkholes form?

Accepted Answer

A)  a small explosion of methane gas from coal beds
B)  a small explosion of CO2 gas from dissolving limestone
C)  a rising dome of salt finally reaches the surface
D)  the roof of a cave collapsesE) B) and C)
F) A) and C)

Question 4

Most groundwater pumped in the United States is used for:

Accepted Answer

A)  industry
B)  irrigation
C)  drinking water
D)  swimming poolsE) None of the above
F) A) and B)

Question 5

Which of the following materials has high porosity and high permeability?

Accepted Answer

A)  unfractured granite
B)  well-sorted gravel
C)  compacted clay
D)  uncompacted clay
E)  poorly sorted sand,silt,and clayF) D) and E)
G) B) and D)

Question 6

Which of these four lakes could be replenished by groundwater?

Accepted Answer

A)  1 and 2
B)  2 and 3
C)  3 and 4
D)  1 and 4
E)  none of theseF) C) and D)
G) All of the above

Question 7

What is a possible consequence of overpumping of groundwater?

Accepted Answer

A)  inflation of the aquifer due to an increase in porosity
B)  flooding due to rising groundwater levels
C)  along the coast,pulling saltwater into wells that were previously fresh
D)  all of theseE) A) and D)
F) A) and C)

Question 8

Which of the following is a valid statement with relevance to groundwater?

Accepted Answer

A)  in most sediments,adjacent grains fit tightly together
B)  fractures are the main way groundwater moves through some rocks,such as granite
C)  most groundwater occurs in underground lakes
D)  most groundwater occurs in underground rivers
E)  all of theseF) None of the above
G) A) and B)

Question 9

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) None of the above
F) All of the above

Question 10

Why does a plume of contamination spread out (become wider) away from the source of contamination?

Accepted Answer

A)  because the water flows faster and faster
B)  because of diffusion of the contamination and mixing of contaminated and uncontaminated water
C)  it does not spread out away from the source
D)  it will only spread out if it is close to a cone of depressionE) A) and B)
F) None of the above

Question 11

Which of the following is a valid statement with relevance to groundwater?

Accepted Answer

A)  In most sediments,adjacent grains fit tightly together.
B)  Fractures are the main way groundwater moves through some rocks,such as granite.
C)  Most groundwater occurs in caves and underground lakes.
D)  None of these.E) B) and C)
F) A) and D)

Question 12

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) C) and D)
G) B) and C)

Question 13

In a material that holds groundwater,porosity:

Accepted Answer

A)  controls the amount of water that can be stored
B)  determines the composition of the cement between grains and clasts
C)  does not depend on the size and shape of grains and clasts
D)  is constant from one type of material to anotherE) B) and C)
F) A) and B)

Question 14

What rock type is the most common setting for caves formed by dissolution of a rock?

Accepted Answer

A)  well-sorted sandstone
B)  gray limestone
C)  dark porous lava flows
D)  gray granite
E)  slateF) B) and E)
G) C) and D)

Question 15

Which of the following is NOT a possible source of water contamination?

Accepted Answer

A)  dry cleaners
B)  farms
C)  rocks that have been mineralized by natural processes but not mined
D)  houses
E)  all of these are possible sources of contaminationF) C) and D)
G) B) and C)

Question 16

Groundwater velocity (the rate of movement of ground water) is most strongly influenced by which of the following factors?

Accepted Answer

A)  local climate and humidity
B)  depth to the water table
C)  presence of wells
D)  the slope (gradient) of the water tableE) A) and B)
F) None of the above

Question 17

What is the main importance of the Ogallala aquifer?

Accepted Answer

A)  it feeds springs for the largest trout farms in the world
B)  it is an important source of irrigation
C)  it is an important source of coal and hydroelectric power
D)  radioactive waste has been buried along the eastern side and is leakingE) A) and B)
F) A) and C)

Question 18

Which of the following features is formed by the collapse of caves?

Accepted Answer

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

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) C) and E)
G) A) and B)

Question 20

What does the hydrologic cycle reference?

Accepted Answer

A)  seawater that is drawn into mid-ocean ridges,heated,and rises to the surface
B)  water that is heated by magma and rises in hot springs
C)  the rising and falling of tides in a cyclical manner
D)  the way water is used to generate electrical energy
E)  none of theseF) C) and D)
G) B) and C)

Exam 17: Water Resources

Which of the following is NOT a possible source of water contamination?

Correct AnswerverifiedShow Answer

Why does a plume of contamination spread out (become wider) away from the source of contamination?

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

Most groundwater pumped in the United States is used for:

Correct AnswerverifiedShow Answer

Which of the following is a valid statement with relevance to groundwater?

Correct AnswerverifiedShow Answer

In a material that holds groundwater,porosity:

Correct AnswerverifiedShow Answer

Where on this cross section would water at the surface infiltrate to become groundwater?

Correct AnswerverifiedShow Answer

What does the hydrologic cycle reference?

Correct AnswerverifiedShow Answer

Which of the following is a valid statement with relevance to groundwater?

Correct AnswerverifiedShow Answer

Which of the following materials probably has the lowest permeability?

Correct AnswerverifiedShow Answer

Which of the following materials has high porosity and high permeability?

Correct AnswerverifiedShow Answer

What is a possible consequence of overpumping of groundwater?

Correct AnswerverifiedShow Answer

Which of these four lakes could be replenished by groundwater?

Correct AnswerverifiedShow Answer

What is the most common way in which sinkholes form?

Correct AnswerverifiedShow Answer

Groundwater velocity (the rate of movement of ground water) is most strongly influenced by which of the following factors?

Correct AnswerverifiedShow Answer

What is the main importance of the Ogallala aquifer?

Correct AnswerverifiedShow Answer

Which of the following features is formed by the collapse of caves?

Correct AnswerverifiedShow Answer

What rock type is the most common setting for caves formed by dissolution of a rock?

Correct AnswerverifiedShow Answer

Which two uses consume most freshwater in the United States?

Correct AnswerverifiedShow Answer

What is a possible way to decrease permeability?

Correct AnswerverifiedShow Answer

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