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Multiple Choice Quiz
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1
Continental glaciation:
A)cannot be found on Earth today.
B)is caused by global warming.
C)exists where a large part of a continent is covered by glacial ice sheets.
D)is found in mountainous regions.
2
Continental glaciation:
A)has occurred in North America.
B)has occurred in Europe.
C)has occurred in Africa.
D)all of these.
3
At present, what percentage of Earth's land surface is covered by glaciers?
A)0.1%
B)5%
C)50%
D)10%
4
Which is a type of glacier?
A)ice cap
B)ice sheet
C)valley glacier
D)all of these are types of glacier.
5
The boundary between the zone of ablation and the zone of accumulation is called:
A)the glacial compensation point.
B)the fall line.
C)the trim line.
D)the equilibrium line.
6
The ice caps on Mars are composed mostly of:
A)carbon dioxide (dry ice).
B)frozen nitrogen.
C)water ice.
D)none of these
7
Recently, geologist have been drilling ice sheets for clues about:
A)the quantity of water stored in glaciers.
B)the age of the Earth.
C)the whereabouts of Noah's ark.
D)past climates on Earth.
8
Glacially eroded valleys are typically:
A)U-shaped.
B)W-shaped
C)V-shaped.
D)S-shaped.
9
Which is not a type of moraine?
A)recessional moraine
B)lateral moraine
C)ground moraine
D)All of these are types of moraine.
10
The last episode of widespread continental glaciation in North America was at its peak:
A)About 2.3 million years ago.
B)North America was never glaciated.
C)when shallow seas covered most of North America.
D)About 18,000 years ago.
11
Alpine glaciers flow downhill because:
A)of gravity.
B)of basal slip.
C)ice behaves as a plastic solid.
D)All of these.
12
During the last Ice Age, much of Nevada, Utah, and eastern California was covered by:
A)continental glaciers.
B)volcanic ash.
C)wind-blown silt.
D)none of these.
13
Crevasses form in the surface of glaciers because:
A)the near-surface ice does not move, but ice beneath it does.
B)the near-surface ice behaves as a brittle solid.
C)the near-surface ice is easily deformed.
D)the near-surface ice is easily melted.
14
The ice that forms continental glaciers originates as:
A)water precipitated from the atmosphere as snow.
B)snow that recrystallizes to form ice.
C)water evaporated from the ocean.
D)all of these
15
Glaciers are capable of:
A)significant erosion.
B)significant modification of landscapes.
C)significant deposition.
D)all of these
16
Continental glaciers:
A)cause significant changes in global sea level.
B)deform continents due to their mass.
C)may have very large lakes at their terminus.
D)all of these
17
Today, glaciers worldwide are:
A)larger than they have ever been.
B)smaller than they have ever been.
C)melting.
D)none of these
18
If all ice sheets were to melt, sea level would rise by over:
A)60 meters.
B)130 meters.
C)200 meters
D)none of these
19
Continental glaciers:
A)are not as cold as alpine glaciers.
B)flow more slowly than alpine glaciers.
C)are usually thinner than alpine glaciers.
D)can be kilometers thick.
20
The Theory of Glacial Ages was first articulated in:
A)the 17th Century
B)the 18th Century
C)the 19th Century
D)the 20th Century





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