Question 1

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

Accepted Answer

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

Question 2

During times when precipitation exceeds potential evapotranspiration,

Accepted Answer

A)  there cannot be a deficit.
B)  extra water goes into soil-water recharge if the soil is below field capacity.
C)  water may go into deep percolation as groundwater.
D)  All of these are correct.

Question 3

Of the following,which has the greatest total volume of water?

Accepted Answer

A)  The atmosphere
B)  Groundwater
C)  Ice caps and glaciers
D)  Rivers and lakes

Question 4

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)  Does not spread out away from the source
D)  Will only spread out if it is close to a cone of depression B

Question 5

Which of the following controls the rate of groundwater flow?

Accepted Answer

A)  The slope of the water table
B)  The permeability of the rocks
C)  How fractured the rocks are
D)  All of these are correct.

Question 6

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 these are correct.

Question 7

Which of the following is true about the Ogallala aquifer?

Accepted Answer

A)  It was featured in the movie A Civil Action.
B)  Water levels are dropping primarily because of overpumping.
C)  It is a confined aquifer so is replenished as fast as water is used.
D)  None of these are correct. B

Question 8

In which of these settings would a river or lake lose water to groundwater?

Accepted Answer

A)  Where the water table adjacent to the river is higher than the river
B)  Where a lake is directly underlain by an impermeable layer
C)  Where a river flows across an area where the water table is far beneath the surface
D)  None of these are correct.

Question 9

This map shows contours of the water table,the location of four factories (labeled A,B,C,and D ) ,and contaminated and uncontaminated wells.Which way will the contamination flow?

Accepted Answer

A)  Northeast,up the contours
B)  Southwest,down the contours
C)  Northwest and southeast,parallel to the contours
D)  Impossible to tell because the movement of contamination is independent of groundwater

Question 10

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 water.
C)  It is an important source of coal and hydroelectric power.
D)  Radioactive waste has been buried along the eastern side and is leaking.

Question 11

In general,the average residence time will increase if

Accepted Answer

A)  the size of the store and the flux both decrease.
B)  the size of the store decreases and the flux increases.
C)  the size of the store increases and the flux decreases.
D)  the size of the store and the flux both increase.

Question 12

The permeability of a material refers to

Accepted Answer

A)  the volume of air space in a material.
B)  a meandering stream's movement across the underlying bedrock.
C)  the ease with which a stream erodes material.
D)  the ability of water to flow through a material. D

Question 13

The magnitude of water in a store can have units of

Accepted Answer

A)  meters per second.
B)  cubic meters per second.
C)  cubic meters.
D)  light-years.

Question 14

Which source of drinking water is most likely to be pure and safe to drink?

Accepted Answer

A)  spring water
B)  bottled spring water
C)  river water
D)  municipal water

Question 15

Which of the following combinations make for the best groundwater reservoir?

Accepted Answer

A)  Low permeability and low porosity
B)  Low permeability and high porosity
C)  High permeability and low porosity
D)  High permeability and high porosity

Question 16

This water balance diagram for the tropical location below suggests that

Accepted Answer

A)  drought is not a real concern.
B)  the soil reaches field capacity in December or January.
C)  the soil seldom reaches the wilting point.
D)  All of these are correct.

Question 17

Which of the following is true about the water table?

Accepted Answer

A)  The shape of the water table does not mimic topography.
B)  Deeper water below the water table must flow in the same direction as near-surface water.
C)  The water table can slope in opposite directions beneath a hill.
D)  All of these are correct.
E)  None of these are correct.

Question 18

Approximately what percentage of precipitation that falls on the continents runs off the surface via rivers/streams?

Accepted Answer

A)  One-tenth
B)  One-third
C)  Two-thirds
D)  Nine-tenths

Question 19

Each number on this figure refers to a location depicting groundwater in a subsurface material that is consistent in character across the entire figure.Of these locations,which two sites are on the opposite side of a groundwater divide?

Accepted Answer

A)  Between 1 and 2
B)  Between 2 and 3
C)  Between 3 and 4
D)  Between 4 and 5
E)  None of these are correct.

Question 20

What could happen if this well is overpumped?

Accepted Answer

A)  It will run out of water and become a dry well.
B)  It will yield more water over time.
C)  The water table will drop,causing sand to flow into the well.
D)  The bottom of the lens of fresh water will rise,causing the well to draw in salt water.

Exam 8: Water Resources

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

Correct AnswerverifiedShow Answer

During times when precipitation exceeds potential evapotranspiration,

Correct AnswerverifiedShow Answer

Of the following,which has the greatest total volume of water?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedB

Which of the following controls the rate of groundwater flow?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is true about the Ogallala aquifer?

Correct AnswerverifiedB

In which of these settings would a river or lake lose water to groundwater?

Correct AnswerverifiedShow Answer

This map shows contours of the water table,the location of four factories (labeled A,B,C,and D ) ,and contaminated and uncontaminated wells.Which way will the contamination flow?

Correct AnswerverifiedShow Answer

What is the main importance of the Ogallala aquifer?

Correct AnswerverifiedShow Answer

In general,the average residence time will increase if

Correct AnswerverifiedShow Answer

The permeability of a material refers to

Correct AnswerverifiedD

The magnitude of water in a store can have units of

Correct AnswerverifiedShow Answer

Which source of drinking water is most likely to be pure and safe to drink?

Correct AnswerverifiedShow Answer

Which of the following combinations make for the best groundwater reservoir?

Correct AnswerverifiedShow Answer

This water balance diagram for the tropical location below suggests that

Correct AnswerverifiedShow Answer

Which of the following is true about the water table?

Correct AnswerverifiedShow Answer

Approximately what percentage of precipitation that falls on the continents runs off the surface via rivers/streams?

Correct AnswerverifiedShow Answer

Each number on this figure refers to a location depicting groundwater in a subsurface material that is consistent in character across the entire figure.Of these locations,which two sites are on the opposite side of a groundwater divide?

Correct AnswerverifiedShow Answer

What could happen if this well is overpumped?

Correct AnswerverifiedShow Answer

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D

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