Question 1

Which of the following is not a way an earthquake can trigger mass wasting?

Accepted Answer

A)  Shaking will harden the soils at the surface, which repels flowing water.
B)  Shaking creates a landslide.
C)  Liquefaction caused sediments to behave like fluids and move.
D)  Shaking has created rock falls that have blocked canyons, an effect that will lead to later problems during flash floods.E) B) and C)
F) A) and D)

Question 2

What is the crescent-shaped mark found at the top of a slump block?

Accepted Answer

A)  Scarp
B)  Ditch
C)  Overburden
D)  EarthflowE) A) and D)
F) B) and C)

Question 3

Assuming this location is near the Arctic Circle, what kind of mass wasting is visible in this image?

Accepted Answer

A)  Mudflow
B)  Creep
C)  Solifluction
D)  RockslideE) A) and C)
F) B) and C)

Question 4

Compare and contrast rotational slides and translational slides.

Accepted Answer

In both cases, the events are slides, wh...

Question 5

Tilted retaining walls are a sign of a landscape undergoing creep.

Accepted Answer

A) True 
 B)False

Question 6

Southern California is famous for its wildfires, which are often exacerbated by the Santa Ana winds blowing through the canyons.What mass wasting event will later devastate the same fire-affected areas?

Accepted Answer

A)  Mudflows
B)  Rockslides
C)  Slumps
D)  SolifluctionE) None of the above
F) A) and B)

Question 7

Which of the following factors does not influence mass wasting?

Accepted Answer

A)  Gravity
B)  Geologic age
C)  Water
D)  VegetationE) A) and B)
F) B) and C)

Question 8

The weathering process of frost action can make a slope less stable.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following scenarios best describes the creation of the lahars associated with the eruption of Mt.St.Helens in 1980?

Accepted Answer

A)  Hot gases melted the volcano's snowcap, generating meltwater that mixed with ash.
B)  A volcanic flank collapsed in a landslide, which flowed into Spirit Lake.
C)  Ash deposited during the eruption was remobilized by a flood years later.
D)  The eruption deposited fine ash in the Toutle River.E) A) and B)
F) None of the above

Question 10

What geologic factors contributed to the severity of the Gros Ventre Landslide of 1925?

Accepted Answer

1)Underlying sedimentary strata tilt par...

Question 11

Which of the following will not oversteepen a slope and lead to mass wasting?

Accepted Answer

A)  Quarrying
B)  Coastal erosion
C)  Construction
D)  None of theseE) B) and D)
F) B) and C)

Question 12

Identify the mass-wasting event in this image.

Accepted Answer

A)  Mudflow
B)  Creep
C)  Solifluction
D)  RockslideE) None of the above
F) B) and D)

Question 13

Which location is likely to experience creep?

Accepted Answer

A)  Horizontal plateaus
B)  Steep slopes
C)  Gentle slopes
D)  Steep and gentle slopes
E)  Vertical cliffsF) C) and D)
G) A) and B)

Question 14

In which direction is mass wasting occurring in this image? (Note: The perspective is from the side.)

Accepted Answer

A)  From top to bottom
B)  From left to right
C)  From bottom to top
D)  From right to leftE) C) and D)
F) All of the above

Question 15

How is it possible for a landslide to occur without a trigger?

Accepted Answer

A)  Heating from geothermal processes weakens the rock.
B)  Long-term weathering weakens the rock past the strength necessary to maintain stability.
C)  Slopes are shaken by earthquakes and the materials are loosened.
D)  Water migrates along the sediment particles, reducing friction between them.E) B) and D)
F) All of the above

Question 16

How do both weathering and erosion work together to produce significant landforms such as broad valleys?

Accepted Answer

Weathering may be responsible ...

Question 17

Identify the mass-wasting event in this image.

Accepted Answer

A)  Slide
B)  Lahar
C)  Mudflow
D)  EarthflowE) A) and C)
F) C) and D)

Question 18

Which one of the following locations would be most likely to have the mass wasting process visible here? (Note: The region is underlaid by permafrost.)

Accepted Answer

A)  Siberia
B)  Colorado
C)  Japan
D)  KansasE) A) and D)
F) B) and C)

Question 19

Rapid mass-wasting events do not always need a trigger.

Accepted Answer

A) True 
 B)False

Question 20

Stream valleys are produced through combined effects of mass wasting and running water.If running water alone were responsible for creating stream valleys, how would they appear?

Accepted Answer

A)  Wide valleys with flat bottoms
B)  V-shaped valleys
C)  Narrow valleys with vertical walls
D)  U-shaped valleysE) None of the above
F) A) and B)

Exam 15: Mass Wasting

Rapid mass-wasting events do not always need a trigger.

Correct AnswerverifiedShow Answer

Stream valleys are produced through combined effects of mass wasting and running water.If running water alone were responsible for creating stream valleys, how would they appear?

Correct AnswerverifiedShow Answer

Which location is likely to experience creep?

Correct AnswerverifiedShow Answer

Which of the following will not oversteepen a slope and lead to mass wasting?

Correct AnswerverifiedShow Answer

Southern California is famous for its wildfires, which are often exacerbated by the Santa Ana winds blowing through the canyons.What mass wasting event will later devastate the same fire-affected areas?

Correct AnswerverifiedShow Answer

Which of the following is not a way an earthquake can trigger mass wasting?

Correct AnswerverifiedShow Answer

What is the crescent-shaped mark found at the top of a slump block?

Correct AnswerverifiedShow Answer

Identify the mass-wasting event in this image.

Correct AnswerverifiedShow Answer

What geologic factors contributed to the severity of the Gros Ventre Landslide of 1925?

Correct Answerverified1)Underlying sedimentary strata tilt par...View AnswerShow Answer

In which direction is mass wasting occurring in this image? (Note: The perspective is from the side.)

Correct AnswerverifiedShow Answer

How is it possible for a landslide to occur without a trigger?

Correct AnswerverifiedShow Answer

Which of the following factors does not influence mass wasting?

Correct AnswerverifiedShow Answer

Which of the following scenarios best describes the creation of the lahars associated with the eruption of Mt.St.Helens in 1980?

Correct AnswerverifiedShow Answer

The weathering process of frost action can make a slope less stable.

Correct AnswerverifiedShow Answer

Which one of the following locations would be most likely to have the mass wasting process visible here? (Note: The region is underlaid by permafrost.)

Correct AnswerverifiedShow Answer

Identify the mass-wasting event in this image.

Correct AnswerverifiedShow Answer

Tilted retaining walls are a sign of a landscape undergoing creep.

Correct AnswerverifiedShow Answer

Compare and contrast rotational slides and translational slides.

Correct AnswerverifiedIn both cases, the events are slides, wh...View AnswerShow Answer

Assuming this location is near the Arctic Circle, what kind of mass wasting is visible in this image?

Correct AnswerverifiedShow Answer

How do both weathering and erosion work together to produce significant landforms such as broad valleys?

Correct AnswerverifiedWeathering may be responsible ...View AnswerShow Answer

Correct Answer
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1)Underlying sedimentary strata tilt par...
View Answer

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In both cases, the events are slides, wh...
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Correct Answer
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Weathering may be responsible ...
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