Name: ________________________ Class: ___________________ Date: __________
ID: A
Earth Science Chapter 7 Section 1
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____
1. Which of the following is true about ice sheets?
a. They are the smallest type of glacier.
b. They flow in all directions.
c. They usually flow down valleys.
d. They are found only in high mountain areas.
____
2. The Antarctic Ice Sheet in the Southern Hemisphere ____.
a. is the only true ice sheet that remains on the planet
b. holds almost one-half of Earth’s salt water
c. holds almost two-thirds of Earth’s fresh water
d. contains about one-fourth of the world’s ice
____
3. A thick ice mass that forms over the land from the accumulation, compaction, and recrystallization of snow is
a ____.
a. fjord
c. drumlin
b. glacier
d. cirque
____
4. Currently, about what percent of Earth’s land surface is covered by glaciers?
a. 70%
c. 10%
b. 25%
d. 40%
____
5. The loosening and lifting of blocks of rock by glaciers is called ____.
a. plucking
c. abrasion
b. wastage
d. till
____
6. Material deposited directly by a glacier is called ____.
a. a kettle
c. till
b. rock flour
d. stratified drift
____
7. Icebergs are produced when large pieces of ice break off from the front of a glacier during a process called
____.
a. wastage
c. accumulation
b. plucking
d. calving
____
8. What is the term for all sediments of glacial origin?
a. till
c. glacial drift
b. stratified drift
d. loess
____
9. A bowl-shaped depression at the head of a glacial valley is a(n) ____.
a. glacial trough
c. horn
b. arête
d. cirque
2
Name: ________________________
ID: A
____ 10. What feature is labeled B in Figure 7-1?
a. kame
b. esker
c.
d.
drumlin
end moraine
____ 11. What features are labeled A in Figure 7-1?
a. kames
b. eskers
c.
d.
drumlins
end moraines
____ 12. What features are labeled F in Figure 7-1?
a. kames
b. eskers
c.
d.
kettle lakes
drumlins
____ 13. What feature is labeled G in Figure 7-1?
a. end moraine
b. kame
c.
d.
kettle lake
outwash plain
____ 14. During the most recent ice age, what percentage of Earth’s surface was covered by glaciers?
a. 90%
c. 75%
b. 30%
d. 10%
2
Name: ________________________
ID: A
Completion
Complete each statement.
15. The small glaciers that exist in high mountainous areas are called ____________________.
16. The only ____________________ that exist today are found covering Greenland and Antarctica.
17. In a process called ____________________, glaciers smooth and polish the bedrock below, creating a
pulverized substance called rock flour.
18. Material deposited directly by glacial ice is called ____________________.
19. A(n) ____________________ is a streamlined asymmetrical hill composed of till.
20. A(n) ____________________ is a U-shaped valley produced by the erosion of a valley glacier.
21. ____________________ is unsorted sediment laid down by glacial meltwater.
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.
22. Compare and contrast valley glaciers and ice sheets.
3
Name: ________________________
ID: A
23. What is a glacial horn?
Essay: ON THE TEST, you will have to complete ONE ESSAY QUESTION from ALL of the essay questions that
appear in the chapter.
24. List and briefly describe at least four glacial depositional features.
4
ID: A
Earth Science Chapter 7 Section 1
Answer Section
MULTIPLE CHOICE
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
B
C
B
C
A
C
D
C
D
D
C
C
D
B
PTS:
PTS:
PTS:
PTS:
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PTS:
PTS:
PTS:
1
1
1
1
1
1
1
1
1
1
1
1
1
1
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
COMPLETION
15. ANS: valley glaciers
PTS: 1
16. ANS: ice sheets
DIF: L1
OBJ: 7.1
PTS: 1
17. ANS: abrasion
DIF: L1
OBJ: 7.1
PTS: 1
18. ANS: till
DIF: L1
OBJ: 7.2
PTS: 1
19. ANS: drumlin
DIF: L1
OBJ: 7.2
PTS: 1
DIF: L1
20. ANS: glacial trough
OBJ: 7.3
PTS: 1
DIF: L1
21. ANS: Stratified drift
OBJ: 7.3
PTS: 1
DIF: L1
OBJ: 7.3
1
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
7.1
7.1
7.1
7.1
7.2
7.2
7.2
7.2
7.3
7.3
7.3
7.3
7.3
7.4
ID: A
SHORT ANSWER
22. ANS:
Both are types of glaciers; valley glaciers exist in high mountains and flow down valleys, while ice sheets are
huge ice masses that flow in all directions.
PTS: 1
DIF: L1
OBJ: 7.1
23. ANS:
a sharp pyramid-shaped mountain peak, formed when several cirques surround a single high mountain
PTS: 1
DIF: L1
OBJ: 7.3
ESSAY
24. ANS:
Possible answer: 1) Moraines are layers or ridges of till that can form at the sides, along the bottom, or at the
end of a glacier, or when two valley glaciers meet. 2) Drumlins are streamlined, asymmetrical hills composed
of till. 3) Eskers are narrow ridges of sand and gravel deposited by streams flowing in tunnels under the ice.
4) Outwash plains are broad ramp-like accumulations of sediment deposited by meltwater that flows from the
base of a glacier.
PTS: 1
DIF: L2
OBJ: 7.3
2