Question 1

How do slumps and translational slides differ?

Accepted Answer

A) translational slides are more damaging 
B) slumps are more damaging 
C) slumps are rotational, while translational slides are planar 
D) slumps create debris flows, while translational slides do not 
A) translational slides are more damaging 
B) slumps are more damaging 
C) slumps are rotational, while translational slides are planar 
D) slumps create debris flows, while translational slides do not C

Question 2

The ratio of resisting to driving forces is called the ________.

Accepted Answer

safety factor

Question 3

Snow avalanches tend to move down tracks called ________.

Accepted Answer

chutes

Question 4

How might the 1983 Thistle landslide have been prevented?

Accepted Answer

A) removal of the vegetation that added mass to the hillslope 
B) rerouting of the highway that crossed the slide mass 
C) construction of retaining walls at the foot of the slope 
D) examination of landslide history and installation of drains 
A) removal of the vegetation that added mass to the hillslope 
B) rerouting of the highway that crossed the slide mass 
C) construction of retaining walls at the foot of the slope 
D) examination of landslide history and installation of drains

Question 5

The Vaiont Dam disaster occurred when landslides caused the dam to fail.

Accepted Answer

A) True 
 B)False

Question 6

Grading of slopes can either increase or decrease landslide hazards.

Accepted Answer

A) True 
 B)False

Question 7

Erosion of the base of a slope may increase landslide hazards.

Accepted Answer

A) True 
 B)False

Question 8

________ are caused by the collapse of caverns.

Accepted Answer

The answer of ________ are caused by the collapse of...

Question 9

Why might the infiltration of water deep into a slide mass increase landslide hazards?

Accepted Answer

A) Deep infiltration forces vegetation to root more deeply. 
B) Water will erode the subsurface materials, reducing strength of the slide mass. 
C) Water in the deep subsurface influences soil formation, leading to shallow soil slips. 
D) The water increases the pore water pressure, effectively lifting the slide mass from stable ground beneath. 
A) Deep infiltration forces vegetation to root more deeply. 
B) Water will erode the subsurface materials, reducing strength of the slide mass. 
C) Water in the deep subsurface influences soil formation, leading to shallow soil slips. 
D) The water increases the pore water pressure, effectively lifting the slide mass from stable ground beneath.

Question 10

Why are landslides more common on steep slopes?

Accepted Answer

A) Slope angle determines the relative magnitude of driving forces. 
B) Water flows much faster on steep slopes. 
C) The steeper the slope, the less vegetation plays a role in anchoring the slope. 
D) Steeper slopes typically are underlain by weaker Earth materials. 
A) Slope angle determines the relative magnitude of driving forces. 
B) Water flows much faster on steep slopes. 
C) The steeper the slope, the less vegetation plays a role in anchoring the slope. 
D) Steeper slopes typically are underlain by weaker Earth materials.

Question 11

Slumps and debris flows tend to occur separately in time and space.

Accepted Answer

A) True 
 B)False

Question 12

Why is drainage control sometimes an effective method of landslide control?

Accepted Answer

A) it reduces the amount of water in the hillslope materials 
B) it reduces the growth of vegetation 
C) it reduces the thickness of the slide mass 
D) it reduces the permeability of the rocks 
A) it reduces the amount of water in the hillslope materials 
B) it reduces the growth of vegetation 
C) it reduces the thickness of the slide mass 
D) it reduces the permeability of the rocks

Question 13

Hillslopes typically are static systems.

Accepted Answer

A) True 
 B)False

Question 14

Land subsidence in the Central Valley, California, results mostly from oil extraction.

Accepted Answer

A) True 
 B)False

Question 15

A comprehensive term for any type of downslope movement of Earth materials is

Accepted Answer

A) subsidence 
B) debris flow 
C) avalanche 
D) mass wasting 
A) subsidence 
B) debris flow 
C) avalanche 
D) mass wasting

Question 16

________ and ________ can severely increase landslide hazards in mountainous terrains.

Accepted Answer

Logging, r

Question 17

________ is the downslope movement of a coherent block of Earth material.

Accepted Answer

The answer of ________ is the downslope movement of a...

Question 18

What strategy has been suggested to stabilize the La Conchita, California, landslide?

Accepted Answer

A) retaining wall construction 
B) water drainage 
C) planting of vegetation 
D) slope grading 
A) retaining wall construction 
B) water drainage 
C) planting of vegetation 
D) slope grading

Question 19

Hillslopes in weaker rocks tend to be more gently sloped.

Accepted Answer

A) True 
 B)False

Question 20

All slope movements fall under the term ________.

Accepted Answer

The answer of All slope movements fall under the term...

How do slumps and translational slides differ?

The ratio of resisting to driving forces is called the ________.

Snow avalanches tend to move down tracks called ________.

How might the 1983 Thistle landslide have been prevented?

The Vaiont Dam disaster occurred when landslides caused the dam to fail.

Grading of slopes can either increase or decrease landslide hazards.

Erosion of the base of a slope may increase landslide hazards.

________ are caused by the collapse of caverns.

Why might the infiltration of water deep into a slide mass increase landslide hazards?

Why are landslides more common on steep slopes?

Slumps and debris flows tend to occur separately in time and space.

Why is drainage control sometimes an effective method of landslide control?

Hillslopes typically are static systems.

Land subsidence in the Central Valley, California, results mostly from oil extraction.

A comprehensive term for any type of downslope movement of Earth materials is

and can severely increase landslide hazards in mountainous terrains.

________ is the downslope movement of a coherent block of Earth material.

What strategy has been suggested to stabilize the La Conchita, California, landslide?

Hillslopes in weaker rocks tend to be more gently sloped.

All slope movements fall under the term ________.

Philosophy and Fundamental Concepts

Internal Structure of Earth and Plate Tectonics

Minerals and Rocks

Ecology and Geology

Introduction to Natural Hazards

Earthquakes

Tsunamis

Volcanic Activity

Rivers and Flooding

Coastal Processes

Impact of Extraterrestrial Objects

Water Resources

Water Pollution

Mineral Resources and the Environment

Energy Resources

Soils and Environment

Global Climate Change

Geology, Society, and the Future

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Exam 10: Slope Processes, Landslides, and Subsidence

How do slumps and translational slides differ?

The ratio of resisting to driving forces is called the ________.

Snow avalanches tend to move down tracks called ________.

How might the 1983 Thistle landslide have been prevented?

The Vaiont Dam disaster occurred when landslides caused the dam to fail.

Grading of slopes can either increase or decrease landslide hazards.

Erosion of the base of a slope may increase landslide hazards.

________ are caused by the collapse of caverns.

Why might the infiltration of water deep into a slide mass increase landslide hazards?

Why are landslides more common on steep slopes?

Slumps and debris flows tend to occur separately in time and space.

Why is drainage control sometimes an effective method of landslide control?

Hillslopes typically are static systems.

Land subsidence in the Central Valley, California, results mostly from oil extraction.

A comprehensive term for any type of downslope movement of Earth materials is

________ and ________ can severely increase landslide hazards in mountainous terrains.

________ is the downslope movement of a coherent block of Earth material.

What strategy has been suggested to stabilize the La Conchita, California, landslide?

Hillslopes in weaker rocks tend to be more gently sloped.

All slope movements fall under the term ________.

Philosophy and Fundamental Concepts

Internal Structure of Earth and Plate Tectonics

Minerals and Rocks

Ecology and Geology

Introduction to Natural Hazards

Earthquakes

Tsunamis

Volcanic Activity

Rivers and Flooding

Coastal Processes

Impact of Extraterrestrial Objects

Water Resources

Water Pollution

Mineral Resources and the Environment

Energy Resources

Soils and Environment

Global Climate Change

Geology, Society, and the Future

Filters

and can severely increase landslide hazards in mountainous terrains.