Name: ________________________ Class: ___________________ Date: __________
Earth Science Chapter 6 Section 1 Review
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____
1. What process is illustrated by the arrows labeled A in Figure 6-1?
a. precipitation
c. runoff
b. evaporation
d. infiltration
____
2. In Figure 6-1, what process is illustrated by the arrows labeled D?
a. precipitation
c. runoff
b. evaporation
d. infiltration
____
3. The water cycle is the ____.
a. distribution of drinking water on Earth
b. unending circulation of Earth’s water supply
c. the recycling of water after industrial use
d. the evaporation of water from Earth’s surface
____
4. Plants release water into the atmosphere through a process called ____.
a. evaporation
c. infiltration
b. transpiration
d. precipitation
____
5. Balance in the water cycle means that ____.
a. the average annual precipitation over Earth equals the amount of water that evaporates
b. water that falls to Earth only enters oceans
c. the amount of water that falls to Earth weighs the same as the amount that condenses in
clouds
d. water that evaporates from Earth’s surface remains forever in the atmosphere
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ID: A
Name: ________________________
ID: A
____
6. The ability of a stream to erode and transport material depends largely on its ____.
a. width
c. velocity
b. length
d. density
____
7. Which of the following factors does NOT influence stream velocity?
a. channel size and shape
c. stream elevation
b. stream gradient
d. discharge of stream
____
8. The single most important erosional agent on Earth is ____.
a. wind
c. ocean waves
b. glaciers
d. running water
____
9. If you were to examine the profile of a typical stream, you would probably find that the gradient is ____.
a. steepest near the mouth
b. steepest near the head
c. about the same at both the head and the mouth
d. gentler near the head
____ 10. The vertical drop of a stream channel over a certain distance is called ____.
a. discharge
c. gradient
b. channel roughness
d. runoff
____ 11. Base level is ____.
a. any part of the stream that is below sea level
b. the lowest point to which a stream can erode its channel
c. the source from which the stream flows
d. the elevation of a stream’s largest tributary
____ 12. What is the ultimate base level of a stream?
a. a large lake
b. the ocean
c.
d.
a resistant layer of rock
a larger stream
Completion
Complete each statement.
13. The release of water vapor into the atmosphere by plants is referred to as ____________________.
14. The ability of a stream to erode and transport materials is determined mainly by the stream’s
____________________.
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Name: ________________________
ID: A
15. The ____________________ of a stream is the amount of water flowing past a certain point in a given unit of
time.
16. The maximum depth to which a stream can erode is called ____________________.
Short Answer: ON THE TEST, you will have to complete TWO SHORT ANSWER QUESTIONS from ALL of the
short answer questions that appear in the chapter.
17. What are the five major processes that are involved in the water cycle?
18. How is the water cycle balanced?
19. List the factors that determine a stream’s velocity.
20. How do the gradient and discharge of a stream change from its headwaters to its mouth?
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Name: ________________________
ID: A
Essay: ON THE TEST, you will have to complete ONE ESSAY QUESTION from ALL of the essay questions that
appear in the chapter.
21. Briefly describe the movement of water through the water cycle.
4
ID: A
Earth Science Chapter 6 Section 1 Review
Answer Section
MULTIPLE CHOICE
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
A
D
B
B
A
C
C
D
B
C
B
B
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
1
1
1
1
1
1
1
1
1
1
1
1
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
6.1
6.1
6.1
6.1
6.2
6.3
6.3
6.3
6.4
6.4
6.5
6.5
COMPLETION
13. ANS: transpiration
PTS: 1
14. ANS: velocity
DIF: L1
OBJ: 6.1
PTS: 1
15. ANS: discharge
DIF: L1
OBJ: 6.3
PTS: 1
16. ANS: base level
DIF: L1
OBJ: 6.4
DIF: L1
OBJ: 6.5
PTS: 1
SHORT ANSWER
17. ANS:
precipitation, evaporation, transpiration, infiltration, and runoff
PTS: 1
DIF: L1
OBJ: 6.1
18. ANS:
The water cycle is balanced when the average annual precipitation over Earth equals the amount of water that
evaporates.
PTS: 1
DIF: L1
OBJ: 6.2
1
ID: A
19. ANS:
the stream’s discharge and the stream channel’s gradient, shape, size, and roughness
PTS: 1
DIF: L1
OBJ: 6.3
20. ANS:
A stream’s gradient decreases between its headwaters and its mouth, and its discharge increases from its
headwaters to its mouth.
PTS: 1
DIF: L1
OBJ: 6.4
ESSAY
21. ANS:
Energy from the sun evaporates water from Earth’s surface—both the land surface and the oceans—into the
atmosphere. The water vapor in the atmosphere falls back to the surface as precipitation. If the water falls on
the continents, much of it will find its way back to the atmosphere through evaporation and through
transpiration by plants. Some water will soak into the ground to become groundwater through the process of
infiltration, and some water will run off the land surface into the oceans, rivers, or lakes.
PTS: 1
DIF: L2
OBJ: 6.1
2