Question 1

Alpine glaciers eroding parallel valleys may produce thin, sharp ridge forms known as arête.

Accepted Answer

A) True 
 B)False

Question 2

Overall, the Arctic is much cooler than Antarctic.

Accepted Answer

A) True 
 B)False

Question 3

A snowline refers to

Accepted Answer

A)   the latitude or elevation at which winter snow accumulates each year.
B)   the latitude demarcating the extent of glacial ice during the last glacial maximum.
C)   an isoline demarcating the extent of snow or ice on a weather map.
D)   the lowest line (latitude or elevation)  where winter snow accumulation persists throughout the summer.E) A) and B)
F) A) and C)

Question 4

Drumlins and kettles are examples of alpine glacial landforms.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is not correct regarding the Pleistocene?

Accepted Answer

A)   Sea levels were 100 m (330 ft.)  higher than today.
B)   At its height almost a third of Earth was covered with ice.
C)   It began 1.65 mya and had at least 18 glacial/interglacial cycles.
D)   The Ohio and Missouri River systems marked the southern terminus of continuous ice at its greatest extent.E) B) and D)
F) B) and C)

Question 6

If a glacier does not have debris embedded in its base, it is not a very effective agent of abrasion.

Accepted Answer

A) True 
 B)False

Question 7

Solifluction is the downslope movement of soil particles resulting from freeze/thaw cycles.

Accepted Answer

A) True 
 B)False

Question 8

Unfrozen ground in a region of discontinuous permafrost is known as

Accepted Answer

A)   nunatak.
B)   talik.
C)   cryotic zone.
D)   patterned ground.E) B) and C)
F) C) and D)

Question 9

A glacier confined in a bowl-shaped recess is known as a(n)

Accepted Answer

A)   cirque glacier.
B)   valley glacier.
C)   piedmont glacier.
D)   tidewater glacier.E) None of the above
F) B) and D)

Question 10

Describe the importance of periglacial processes.

Accepted Answer

Periglacial regions occupy over 20% of the Earth's land surface and are dominated by the geomorphological processes related to the freezing of water. Periglacial conditions occur at high latitudes, with a near permanent ice cover, at high elevations in lower latitudes, with areas that are seasonally snow free. They tend to correspond to subarctic and polar climate zones, in particular the tundra climate.
In areas where the soil, sediment, or rock is below freezing for at least two years, permafrost forms. Where permafrost is not covered by a glacier, it is considered periglacial. Large portions of Alaska, Canada, China, Scandinavia, Greenland, and Antarctica have permafrost. Permafrost may be divided into continuous and discontinuous zones and are exactly as the names suggest.
These periglacial environments are subject to freeze/thaw actions and the landforms that result, such as ice wedges, hummocks, patterned ground, solifluction, and gelifluction. Humans have also settled periglacial regions. Due to the freeze/thaw processes, humans must learn to properly adapt structures to the environment.

Question 11

Worldwide, alpine glaciers are presently increasing in size and number.

Accepted Answer

A) True 
 B)False  False

Question 12

The transformation of snow into glacial ice in Antarctica takes ________ than in midlatitude alpine glaciers because ________.

Accepted Answer

A)   less time; more snow fall in the polar regions each year slows the glacier formation process
B)   less time; there is more melting and refreezing in the midlatitudes and, therefore, it takes much longer there
C)   longer; the long summer days in Antarctica (up to 24-hours)  results in more sunlight impeding the glacier development process
D)   longer; the dryness of the Antarctic climate and minimal snowfall as compared to wetter climates with constant snowfallE) None of the above
F) All of the above D

Question 13

The zone of seasonally frozen ground that exists between the subsurface permafrost layer and the ground surface is called the

Accepted Answer

A)   gelifluction.
B)   discontinuous region.
C)   active layer.
D)   talik.E) None of the above
F) B) and D)

Question 14

Most glaciers are stationary, moving at no more than several millimeters per year.

Accepted Answer

A) True 
 B)False

Question 15

During a surge, a glacier moves up to 2 km/hr.

Accepted Answer

A) True 
 B)False

Question 16

Calving leads to the formation of icebergs.

Accepted Answer

A) True 
 B)False

Question 17

If two glaciers with lateral moraines join, a medial moraine may form.

Accepted Answer

A) True 
 B)False

Question 18

Many western states rely heavily on snowmelt for their municipal water supplies.

Accepted Answer

A) True 
 B)False

Question 19

Vertical and horizontal movement caused by the expansion of freezing water are called

Accepted Answer

A)   frost heaving and frost thrusting, respectively.
B)   frost thrusting and frost heaving, respectively.
C)   frost heaving.
D)   frost thrusting.E) A) and B)
F) None of the above

Question 20

A class of landforms formed by the accumulation of glacial till are known as

Accepted Answer

A)   drift.
B)   alluvium.
C)   outwash.
D)   moraines.E) B) and C)
F) A) and B)

Exam 17: Glacial and Periglacial Processes and Landforms

Alpine glaciers eroding parallel valleys may produce thin, sharp ridge forms known as arête.

Correct Answer
verified

Overall, the Arctic is much cooler than Antarctic.

Correct Answer
verified

A snowline refers to

Correct Answer
verified

Drumlins and kettles are examples of alpine glacial landforms.

Correct Answer
verified

Which of the following is not correct regarding the Pleistocene?

Correct Answer
verified

If a glacier does not have debris embedded in its base, it is not a very effective agent of abrasion.

Correct Answer
verified

Solifluction is the downslope movement of soil particles resulting from freeze/thaw cycles.

Correct Answer
verified

Unfrozen ground in a region of discontinuous permafrost is known as

Correct Answer
verified

A glacier confined in a bowl-shaped recess is known as a(n)

Correct Answer
verified

Describe the importance of periglacial processes.

Worldwide, alpine glaciers are presently increasing in size and number.

Correct Answer
verified
False

The transformation of snow into glacial ice in Antarctica takes than in midlatitude alpine glaciers because .

Correct Answer
verified
D

The zone of seasonally frozen ground that exists between the subsurface permafrost layer and the ground surface is called the

Correct Answer
verified

Most glaciers are stationary, moving at no more than several millimeters per year.

Correct Answer
verified

During a surge, a glacier moves up to 2 km/hr.

Correct Answer
verified

Calving leads to the formation of icebergs.

Correct Answer
verified

If two glaciers with lateral moraines join, a medial moraine may form.

Correct Answer
verified

Many western states rely heavily on snowmelt for their municipal water supplies.

Correct Answer
verified

Vertical and horizontal movement caused by the expansion of freezing water are called

Correct Answer
verified

A class of landforms formed by the accumulation of glacial till are known as

Correct Answer
verified

Exam 17: Glacial and Periglacial Processes and Landforms

Alpine glaciers eroding parallel valleys may produce thin, sharp ridge forms known as arête.

Correct AnswerverifiedShow Answer

Overall, the Arctic is much cooler than Antarctic.

Correct AnswerverifiedShow Answer

A snowline refers to

Correct AnswerverifiedShow Answer

Drumlins and kettles are examples of alpine glacial landforms.

Correct AnswerverifiedShow Answer

Which of the following is not correct regarding the Pleistocene?

Correct AnswerverifiedShow Answer

If a glacier does not have debris embedded in its base, it is not a very effective agent of abrasion.

Correct AnswerverifiedShow Answer

Solifluction is the downslope movement of soil particles resulting from freeze/thaw cycles.

Correct AnswerverifiedShow Answer

Unfrozen ground in a region of discontinuous permafrost is known as

Correct AnswerverifiedShow Answer

A glacier confined in a bowl-shaped recess is known as a(n)

Correct AnswerverifiedShow Answer

Describe the importance of periglacial processes.

Worldwide, alpine glaciers are presently increasing in size and number.

Correct AnswerverifiedFalse

The transformation of snow into glacial ice in Antarctica takes ________ than in midlatitude alpine glaciers because ________.

Correct AnswerverifiedD

The zone of seasonally frozen ground that exists between the subsurface permafrost layer and the ground surface is called the

Correct AnswerverifiedShow Answer

Most glaciers are stationary, moving at no more than several millimeters per year.

Correct AnswerverifiedShow Answer

During a surge, a glacier moves up to 2 km/hr.

Correct AnswerverifiedShow Answer

Calving leads to the formation of icebergs.

Correct AnswerverifiedShow Answer

If two glaciers with lateral moraines join, a medial moraine may form.

Correct AnswerverifiedShow Answer

Many western states rely heavily on snowmelt for their municipal water supplies.

Correct AnswerverifiedShow Answer

Vertical and horizontal movement caused by the expansion of freezing water are called

Correct AnswerverifiedShow Answer

A class of landforms formed by the accumulation of glacial till are known as

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
False

The transformation of snow into glacial ice in Antarctica takes than in midlatitude alpine glaciers because .

Correct Answer
verified
D

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified