Question 1

____________occur(s) when a semicoherent mass of material moves downslope on a failure surface.

Accepted Answer

A)  Avalanches
B)  Slumps
C)  Creep
D)  Solifluction

Question 2

Mass movement along coastal cliffs in southern California is so common because ____________.

Accepted Answer

A)  the region is along an active margin with frequent earthquakes
B)  the region is dry and the slopes support little or no vegetation
C)  much of the rock in southern California is fractured
D)  All of the above are correct.

Question 3

Moisture among sediment grains ____________.

Accepted Answer

A)  always increases the likelihood of mass wasting
B)  always decreases the likelihood of mass wasting
C)  can promote stability if present in small amounts,but promotes mass wasting if sediment is saturated
D)  can promote stability if the grains are saturated,but a small amount being present has little effect on the likelihood of mass wasting

Question 4

Between subaerial and submarine mass movements,we have a much better historical record of ____________.

Accepted Answer

A)  subaerial movements
B)  submarine movements

Question 5

____________ may trigger tsunamis.

Accepted Answer

A)  Lahars
B)  Submarine mass movements
C)  Avalanches
D)  Rockfalls

Question 6

One of the most problematic aspects of landslides is that large-scale,cataclysmic examples are the norm,whereas small-scale landslides are much more rare.

Accepted Answer

A) True 
 B)False

Question 7

____________ may form parallel to slope surfaces in granite and become a failure surface.

Accepted Answer

A)  Bedding planes
B)  Exfoliation joints
C)  Foliation planes

Question 8

____________ are surface features indicative of a developing slump.

Accepted Answer

A)  Dead trees
B)  Sinking foundations
C)  Tilted utility poles
D)  All of the above are correct.

Question 9

The principle difference between a debris slide and a debris avalanche is the ____________.

Accepted Answer

A)  shape of the path taken by the moving mass
B)  grain size of the moving mass
C)  debris slide contains abundant water,whereas the debris avalanche is dry
D)  debris slide contains pyroclastic debris from a volcanic eruption

Question 10

A rock slide into a reservoir triggered catastrophic flooding of the landscape below which dam?

Accepted Answer

A)  Vaiont (Italy) 
B)  Aswan (Egypt) 
C)  Hoover (Nevada) 
D)  Glen Canyon (Arizona)

Question 11

Which of the following increases the risk of mass movement?

Accepted Answer

A)  adding a small amount of moisture to loose,dry sediment
B)  waves breaking before they reach sea cliffs
C)  flooding the sediment with water to the point of saturation
D)  reducing the grade of the slope

Question 12

The principle difference between a slump and a debris slide is the ____________.

Accepted Answer

A)  shape of the path taken by the moving mass
B)  grain size of the moving mass
C)  slump contains abundant water,whereas the debris slide is dry
D)  slump contains pyroclastic debris from a volcanic eruption

Question 13

____________ in metamorphic rock may become a failure surface.

Accepted Answer

A)  Bedding planes
B)  Exfoliation joints
C)  Foliation planes

Question 14

All regions are susceptible to mass movements.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following types of mass movement is likely to move most rapidly?

Accepted Answer

A)  slump
B)  creep
C)  rock slide
D)  debris slide

Question 16

Coastal California is particularly susceptible to mass wasting because of ____________.

Accepted Answer

A)  tectonic activity
B)  weak substrate
C)  seasonal heavy rains
D)  All of the above are correct.

Question 17

Which of the following factors decreases the risk of mass movement?

Accepted Answer

A)  nearby earthquakes
B)  excavation into the base of a hill
C)  adding weight to the top of a hill
D)  adding vegetation to the side of a hill

Question 18

A ____________ may form at the head of a slump.

Accepted Answer

A)  toe
B)  failure surface
C)  scarp
D)  mass

Question 19

Which type of bedrock provides the greatest risk of landslide?

Accepted Answer

A)  granite
B)  gneiss
C)  sandstone
D)  shale

Question 20

Conditions such as ____________ may exacerbate a developing slump.

Accepted Answer

A)  persistent rain
B)  rising floodwaters
C)  continuing earthquake aftershocks
D)  All of the above are correct.

Exam 16: Unsafe Ground: Landslides and Other Mass Movements

A rock slide into a reservoir triggered catastrophic flooding of the landscape below which dam?

Correct AnswerverifiedShow Answer

____________ are surface features indicative of a developing slump.

Correct AnswerverifiedShow Answer

Coastal California is particularly susceptible to mass wasting because of ____________.

Correct AnswerverifiedShow Answer

Between subaerial and submarine mass movements,we have a much better historical record of ____________.

Correct AnswerverifiedShow Answer

A ____________ may form at the head of a slump.

Correct AnswerverifiedShow Answer

All regions are susceptible to mass movements.

Correct AnswerverifiedShow Answer

Which of the following types of mass movement is likely to move most rapidly?

Correct AnswerverifiedShow Answer

One of the most problematic aspects of landslides is that large-scale,cataclysmic examples are the norm,whereas small-scale landslides are much more rare.

Correct AnswerverifiedShow Answer

____________occur(s) when a semicoherent mass of material moves downslope on a failure surface.

Correct AnswerverifiedShow Answer

Which of the following increases the risk of mass movement?

Correct AnswerverifiedShow Answer

The principle difference between a slump and a debris slide is the ____________.

Correct AnswerverifiedShow Answer

____________ may form parallel to slope surfaces in granite and become a failure surface.

Correct AnswerverifiedShow Answer

Which of the following factors decreases the risk of mass movement?

Correct AnswerverifiedShow Answer

Which type of bedrock provides the greatest risk of landslide?

Correct AnswerverifiedShow Answer

Conditions such as ____________ may exacerbate a developing slump.

Correct AnswerverifiedShow Answer

____________ may trigger tsunamis.

Correct AnswerverifiedShow Answer

The principle difference between a debris slide and a debris avalanche is the ____________.

Correct AnswerverifiedShow Answer

Moisture among sediment grains ____________.

Correct AnswerverifiedShow Answer

Mass movement along coastal cliffs in southern California is so common because ____________.

Correct AnswerverifiedShow Answer

____________ in metamorphic rock may become a failure surface.

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

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