Question 1

The soil above the permafrost table is subject to annual freezing and thawing. This is layer is referred to as the ____ layer.

Accepted Answer

A)   permafrost
B)   water table
C)   active
D)   talikE) B) and C)
F) A) and B) C

Question 2

Freezing and thawing of water can dislodge large boulders from cliffs.

Accepted Answer

A) True 
 B)False

Question 3

The permafrost layer typically begins between _____ below the surface.

Accepted Answer

A)   0 to 15 cm
B)   15 cm to 5 m
C)   5 m to 15 m
D)   5 cm to 15 cmE) A) and D)
F) A) and C)

Question 4

_____ is the slow downslope movement of particles above the permafrost under the influence of gravity.

Accepted Answer

A)   frost wedging
B)   frost heaving
C)   frost thrusting
D)   frost creepE) B) and C)
F) None of the above

Question 5

Areas that are near-glacial or on the perimeter of glaciation are termed:

Accepted Answer

A)   glacial
B)   interglacial
C)   periglacial
D)   permafrostE) A) and B)
F) A) and C)

Question 6

Another name for frost action is:

Accepted Answer

A)   frost wedging
B)   freezing action
C)   frost heaving
D)   frost creepE) A) and D)
F) A) and C)

Question 7

The following are terms that describe an area made up of blocky rock fragments formed from the mechanical breakdown of bedrock by repeated freezing and thawing EXCEPT:

Accepted Answer

A)   ice-wedge polygons
B)   patterned ground
C)   pingos
D)   boulder fieldsE) A) and B)
F) A) and D)

Question 8

All of the following influence the thickness of the active layer EXCEPT:

Accepted Answer

A)   soil texture
B)   vegetation cover
C)   local climate conditions
D)   depth of snow in summerE) All of the above
F) None of the above

Question 9

When rocks are moved upward within the active layer above the permafrost, it is undergoing _____ that is triggered by the expanding of ice in the ground.

Accepted Answer

A)   frost wedging
B)   frost heaving
C)   frost thrusting
D)   frost creepE) None of the above
F) C) and D) B

Question 10

The permafrost has the ability to keep thickening season after season in high-latitude areas. Which factor limits this thickening process?

Accepted Answer

A)   warm temperatures during the summer
B)   the angle of the sun
C)   Earth's interior heat
D)   none of the aboveE) None of the above
F) All of the above

Question 11

Solifluction is a form of fast mass movement that is a combination of frost creep and gelifluction.

Accepted Answer

A) True 
 B)False

Question 12

The construction of different shapes of periglacial rock and soil debris within the periglacial zone is known as:

Accepted Answer

A)   ice-wedge polygons
B)   patterned ground
C)   pingos
D)   boulder fieldsE) None of the above
F) A) and B)

Question 13

The upper surface of the permafrost is called the:

Accepted Answer

A)   permafrost table
B)   ice sheet
C)   frozen mud
D)   snow layerE) C) and D)
F) All of the above

Question 14

The formation of ice-wedge polygons in a periglacial landscape with continuous permafrost begins with:

Accepted Answer

A)   freezing of water in cracks in the ground expands
B)   freezing of water in cracks in the ground causing contracts
C)   thawing and filling of water in expanded cracks
D)   thawing and filling of water in contracted cracksE) A) and D)
F) B) and C)

Question 15

The location under lakes or other bodies of water that are deep enough that do not freeze or may not have a permafrost altogether is called a:

Accepted Answer

A)   active
B)   talik
C)   periglacial
D)   permafrostE) All of the above
F) A) and D) B

Exam 46: Periglacial Environments and Landscapes

The soil above the permafrost table is subject to annual freezing and thawing. This is layer is referred to as the ____ layer.

Correct Answer
verified
C

Freezing and thawing of water can dislodge large boulders from cliffs.

Correct Answer
verified

The permafrost layer typically begins between _____ below the surface.

Correct Answer
verified

_____ is the slow downslope movement of particles above the permafrost under the influence of gravity.

Correct Answer
verified

Areas that are near-glacial or on the perimeter of glaciation are termed:

Correct Answer
verified

Another name for frost action is:

Correct Answer
verified

The following are terms that describe an area made up of blocky rock fragments formed from the mechanical breakdown of bedrock by repeated freezing and thawing EXCEPT:

Correct Answer
verified

All of the following influence the thickness of the active layer EXCEPT:

Correct Answer
verified

When rocks are moved upward within the active layer above the permafrost, it is undergoing _____ that is triggered by the expanding of ice in the ground.

Correct Answer
verified
B

The permafrost has the ability to keep thickening season after season in high-latitude areas. Which factor limits this thickening process?

Correct Answer
verified

Solifluction is a form of fast mass movement that is a combination of frost creep and gelifluction.

Correct Answer
verified

The construction of different shapes of periglacial rock and soil debris within the periglacial zone is known as:

Correct Answer
verified

The upper surface of the permafrost is called the:

Correct Answer
verified

The formation of ice-wedge polygons in a periglacial landscape with continuous permafrost begins with:

Correct Answer
verified

The location under lakes or other bodies of water that are deep enough that do not freeze or may not have a permafrost altogether is called a:

Correct Answer
verified
B

Exam 46: Periglacial Environments and Landscapes

The soil above the permafrost table is subject to annual freezing and thawing. This is layer is referred to as the ____ layer.

Correct AnswerverifiedC

Freezing and thawing of water can dislodge large boulders from cliffs.

Correct AnswerverifiedShow Answer

The permafrost layer typically begins between _____ below the surface.

Correct AnswerverifiedShow Answer

_____ is the slow downslope movement of particles above the permafrost under the influence of gravity.

Correct AnswerverifiedShow Answer

Areas that are near-glacial or on the perimeter of glaciation are termed:

Correct AnswerverifiedShow Answer

Another name for frost action is:

Correct AnswerverifiedShow Answer

The following are terms that describe an area made up of blocky rock fragments formed from the mechanical breakdown of bedrock by repeated freezing and thawing EXCEPT:

Correct AnswerverifiedShow Answer

All of the following influence the thickness of the active layer EXCEPT:

Correct AnswerverifiedShow Answer

When rocks are moved upward within the active layer above the permafrost, it is undergoing _____ that is triggered by the expanding of ice in the ground.

Correct AnswerverifiedB

The permafrost has the ability to keep thickening season after season in high-latitude areas. Which factor limits this thickening process?

Correct AnswerverifiedShow Answer

Solifluction is a form of fast mass movement that is a combination of frost creep and gelifluction.

Correct AnswerverifiedShow Answer

The construction of different shapes of periglacial rock and soil debris within the periglacial zone is known as:

Correct AnswerverifiedShow Answer

The upper surface of the permafrost is called the:

Correct AnswerverifiedShow Answer

The formation of ice-wedge polygons in a periglacial landscape with continuous permafrost begins with:

Correct AnswerverifiedShow Answer

The location under lakes or other bodies of water that are deep enough that do not freeze or may not have a permafrost altogether is called a:

Correct AnswerverifiedB

Correct Answer
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C

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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B

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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B