Question 1

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 
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 2

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

Question 3

____________ may trigger tsunamis.

Accepted Answer

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

Question 4

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 
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 5

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

Question 6

____________ in metamorphic rock may become a failure surface.

Accepted Answer

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

Question 7

A ____________ may form at the head of a slump.

Accepted Answer

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

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

Question 9

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

Question 10

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

Accepted Answer

A) subaerial movements 
B) submarine movements 
A) subaerial movements 
B) submarine movements

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 
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

Which type of bedrock provides the greatest risk of landslide?

Accepted Answer

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

Question 13

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 
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 14

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

Question 15

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

Accepted Answer

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

Question 16

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 17

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 
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 18

All regions are susceptible to mass movements.

Accepted Answer

A) True 
 B)False

Question 19

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

Accepted Answer

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

Question 20

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. 
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.

Exam 16: Unsafe Ground: Landslides and Other Mass Movements

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

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

____________ may trigger tsunamis.

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

Conditions such as ____________ may exacerbate a developing slump.

____________ in metamorphic rock may become a failure surface.

A ____________ may form at the head of a slump.

____________ are surface features indicative of a developing slump.

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

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

Which of the following increases the risk of mass movement?

Which type of bedrock provides the greatest risk of landslide?

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

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

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

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.

Moisture among sediment grains ____________.

All regions are susceptible to mass movements.

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

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

Cosmology and the Birth of Earth

Journey to the Center of the Earth

Drifting Continents and Spreading Seas

The Way the Earth Works: Plate Tectonics

Patterns in Nature: Minerals

Up From the Inferno: Magma and Igneous Rock

Pages of Earths Past: Sedimentary Rocks

Metamorphism: A Process of Change

The Wrath of Vulcan: Volcanic Eruptions

A Violent Pulse: Earthquakes

Cracks, crags, and Crumples: Crustal Deformation and Mountain Building

Deep Time: How Old Is Old

A Biography of Earth

Squeezing Power From a Stone: Energy Resources

Riches in Rock: Mineral Resources

Streams and Floods: The Geology of Running Water

Restless Realm: Oceans and Coasts

A Hidden Reserve: Groundwater

An Envelope of Gas: Earths Atmosphere and Climate

Dry Settings: the Geology of Deserts

Amazing Ice: Glaciers and Ice Ages

Global Change in the Earth System

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