Question 1

Which of the following best describes the forces involved in the stability of a slope?

Accepted Answer

A)  Gp pulls materials perpendicular to the slope; F pulls materials parallel to the slope; and Gd opposes motion between two bodies in contact. 
B)  pulls materials perpendicular to the slope; Gp pulls materials parallel to the slope; and Gd opposes motion between two bodies in contact. 
C)  Gp pulls materials parallel to the slope; Gd pulls materials perpendicular to the slope; and F opposes motion between two bodies in contact. 
D)  Gd pulls materials parallel to the slope; Gp pulls materials perpendicular to the slope; and F opposes motion between two bodies in contact. 
A)  Gp pulls materials perpendicular to the slope; F pulls materials parallel to the slope; and Gd opposes motion between two bodies in contact. 
B)  pulls materials perpendicular to the slope; Gp pulls materials parallel to the slope; and Gd opposes motion between two bodies in contact. 
C)  Gp pulls materials parallel to the slope; Gd pulls materials perpendicular to the slope; and F opposes motion between two bodies in contact. 
D)  Gd pulls materials parallel to the slope; Gp pulls materials perpendicular to the slope; and F opposes motion between two bodies in contact. D

Question 2

Ancient Martian mudflows most likely gained their water from:

Accepted Answer

A)  melted snow from volcanic peaks. 
B)  torrential rains. 
C)  melted permafrost. 
D)  melted polar ice caps. 
A)  melted snow from volcanic peaks. 
B)  torrential rains. 
C)  melted permafrost. 
D)  melted polar ice caps. C

Question 3

Geologists classify mass movements based on:

Accepted Answer

A)  the amount of material involved. 
B)  their speed and the manner of movement of the material. 
C)  the amount of damage incurred. 
D)  the distance the material travels. 
A)  the amount of material involved. 
B)  their speed and the manner of movement of the material. 
C)  the amount of damage incurred. 
D)  the distance the material travels. B

Question 4

All of the following are true of earthflows EXCEPT:

Accepted Answer

A)  they are the fastest and most dangerous type of flow. 
B)  they do a great deal of damage to structures in their paths. 
C)  they consist of relatively dry masses of clayey or silty regolith. 
D)  they are highly viscous. 
A)  they are the fastest and most dangerous type of flow. 
B)  they do a great deal of damage to structures in their paths. 
C)  they consist of relatively dry masses of clayey or silty regolith. 
D)  they are highly viscous.

Question 5

More than any other factor,_________ can cause a previously stable slope to become unstable.

Accepted Answer

A)  the addition of heavy loads 
B)  the burrowing of animals 
C)  the removal of vegetation 
D)  the addition of large amounts of water 
A)  the addition of heavy loads 
B)  the burrowing of animals 
C)  the removal of vegetation 
D)  the addition of large amounts of water

Question 6

How do lahars differ from other types of mass movements?

Accepted Answer

Unlike other types of mass movements, la

Question 7

Loose, unconsolidated material will remain stable if the:

Accepted Answer

A)  arrangement of the materials exceeds the angle of repose. 
B)  friction between the material and the slope equals the downslope component of gravity. 
C)  downslope component of gravity exceeds the friction between the material and the slope. 
D)  friction between the material and the slope exceeds the downslope component of gravity. 
A)  arrangement of the materials exceeds the angle of repose. 
B)  friction between the material and the slope equals the downslope component of gravity. 
C)  downslope component of gravity exceeds the friction between the material and the slope. 
D)  friction between the material and the slope exceeds the downslope component of gravity.

Question 8

The velocity of falls is very high because of the:

Accepted Answer

A)  shape of rock masses. 
B)  steep slope angle. 
C)  acceleration of gravity. 
D)  type of rock involved. 
A)  shape of rock masses. 
B)  steep slope angle. 
C)  acceleration of gravity. 
D)  type of rock involved.

Question 9

Mass- movement events on the Moon are triggered primarily by:

Accepted Answer

A)  meteorite impacts. 
B)  the freezing and thawing of crater slopes. 
C)  volcanic eruptions. 
D)  moonquakes. 
A)  meteorite impacts. 
B)  the freezing and thawing of crater slopes. 
C)  volcanic eruptions. 
D)  moonquakes.

Question 10

How does creep differ from other types of mass movements? What are the causes of creep?

Accepted Answer

Creep is the slowest and most widespread

Question 11

A boulder is most likely to slide downhill if:

Accepted Answer

A)  Gd is relatively high and F is relatively low. 
B)  Gd is relatively low and F is relatively high. 
C)  Gp is relatively high and Gd is relatively low. 
D)  Gp is relatively low and F is relatively high. 
A)  Gd is relatively high and F is relatively low. 
B)  Gd is relatively low and F is relatively high. 
C)  Gp is relatively high and Gd is relatively low. 
D)  Gp is relatively low and F is relatively high.

Question 12

Describe the causes and types of mass movement found on the Moon and Mars.

Accepted Answer

Mass movement on the Moon is triggered p

Question 13

A fragile balance between driving and resisting forces can be upset by all of the following EXCEPT:

Accepted Answer

A)  increase in slope angle by cutting the slope. 
B)  decrease the slope stability by shaking in an earthquake. 
C)  decrease in slope angle by grading the slope. 
D)  increase the weight on the slope by heavy rainfall. 
A)  increase in slope angle by cutting the slope. 
B)  decrease the slope stability by shaking in an earthquake. 
C)  decrease in slope angle by grading the slope. 
D)  increase the weight on the slope by heavy rainfall.

Question 14

Differentiate among the different types of mass movement based on the speed and the manner of movement.

Accepted Answer

There are two kinds of mass movements th

Question 15

Risk- level maps issued by government agencies depicting mass- movement events are based on:

Accepted Answer

A)  geologic evidence of previous slope failure. 
B)  eyewitness accounts. 
C)  analysis of possible triggering mechanisms. 
D)  terrain analyses. 
A)  geologic evidence of previous slope failure. 
B)  eyewitness accounts. 
C)  analysis of possible triggering mechanisms. 
D)  terrain analyses.

Question 16

All of the following are true of lahars EXCEPT:

Accepted Answer

A)  Mount St. Helen's eruption was accompanied by a lahar. 
B)  they occur only during a volcano's eruptive period. 
C)  their water content may be gained from rain caused by the volcanic eruption. 
D)  they are one of the fastest types of flows. 
A)  Mount St. Helen's eruption was accompanied by a lahar. 
B)  they occur only during a volcano's eruptive period. 
C)  their water content may be gained from rain caused by the volcanic eruption. 
D)  they are one of the fastest types of flows.

Question 17

Houses in California that are built on slopes that face the Pacific Ocean are frequently destroyed as a result of mass movement. Without knowing the specific geology of these slopes, what can you determine about the other factors likely to contribute to these mass movements?

Accepted Answer

In such a case, the factors leading to m

Question 18

The steep, exposed cliff face that forms where a slump mass has pulled away from the rest of the slope is a:

Accepted Answer

A)  talus slope. 
B)  joint. 
C)  slump block. 
D)  scarp. 
A)  talus slope. 
B)  joint. 
C)  slump block. 
D)  scarp.

Question 19

All of the following are common human- induced triggers of mass movement EXCEPT:

Accepted Answer

A)  diversion of surface water onto sensitive slopes at construction sites. 
B)  leaky septic fields. 
C)  removing material from slopes. 
D)  over- irrigation of slopes. 
A)  diversion of surface water onto sensitive slopes at construction sites. 
B)  leaky septic fields. 
C)  removing material from slopes. 
D)  over- irrigation of slopes.

Question 20

All of the following events were associated with the Madison Canyon mass- movement event of 1959 EXCEPT:

Accepted Answer

A)  a wall of water rushed over Hegben Dam. 
B)  a landslide moved downslope at 160km/hr. 
C)  lava was erupted from nearby fissures. 
D)  the soil surface rolled like sea waves. 
A)  a wall of water rushed over Hegben Dam. 
B)  a landslide moved downslope at 160km/hr. 
C)  lava was erupted from nearby fissures. 
D)  the soil surface rolled like sea waves.

Which of the following best describes the forces involved in the stability of a slope?

Ancient Martian mudflows most likely gained their water from:

Geologists classify mass movements based on:

All of the following are true of earthflows EXCEPT:

More than any other factor,_________ can cause a previously stable slope to become unstable.

How do lahars differ from other types of mass movements?

Loose, unconsolidated material will remain stable if the:

The velocity of falls is very high because of the:

Mass- movement events on the Moon are triggered primarily by:

How does creep differ from other types of mass movements? What are the causes of creep?

A boulder is most likely to slide downhill if:

Describe the causes and types of mass movement found on the Moon and Mars.

A fragile balance between driving and resisting forces can be upset by all of the following EXCEPT:

Differentiate among the different types of mass movement based on the speed and the manner of movement.

Risk- level maps issued by government agencies depicting mass- movement events are based on:

All of the following are true of lahars EXCEPT:

Houses in California that are built on slopes that face the Pacific Ocean are frequently destroyed as a result of mass movement. Without knowing the specific geology of these slopes, what can you determine about the other factors likely to contribute to these mass movements?

The steep, exposed cliff face that forms where a slump mass has pulled away from the rest of the slope is a:

All of the following are common human- induced triggers of mass movement EXCEPT:

All of the following events were associated with the Madison Canyon mass- movement event of 1959 EXCEPT:

A First Look at Planet Earth - Its Origins, Systems, and Tectonic Plates

Minerals

Igneous Rocks and Processes

Volcanoes and Volcanism

Weathering - the Breakdown of Rocks

Sedimentary Processes, Environments, and Rocks

Metamorphism and Metamorphic Rocks

Telling Time Geologically

Earth Structures - Folds, Faults, and Fabrics

Earthquakes

The Earths Interior - Whats Going on Down There

Plate Tectonics and the Formation of the Earths Oceans

Continental Tectonics and the Formation of the Earths Continents

Streams and Floods

Groundwater

Glaciers and Ice Ages

Deserts and the Work of Winds

Shores and Coastal Processes

Human Use of the Earths Resources Appendices Glossary

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Exam 14: Mass Movement

Which of the following best describes the forces involved in the stability of a slope?

Ancient Martian mudflows most likely gained their water from:

Geologists classify mass movements based on:

All of the following are true of earthflows EXCEPT:

More than any other factor,_________ can cause a previously stable slope to become unstable.

How do lahars differ from other types of mass movements?

Loose, unconsolidated material will remain stable if the:

The velocity of falls is very high because of the:

Mass- movement events on the Moon are triggered primarily by:

How does creep differ from other types of mass movements? What are the causes of creep?

A boulder is most likely to slide downhill if:

Describe the causes and types of mass movement found on the Moon and Mars.

A fragile balance between driving and resisting forces can be upset by all of the following EXCEPT:

Differentiate among the different types of mass movement based on the speed and the manner of movement.

Risk- level maps issued by government agencies depicting mass- movement events are based on:

All of the following are true of lahars EXCEPT:

Houses in California that are built on slopes that face the Pacific Ocean are frequently destroyed as a result of mass movement. Without knowing the specific geology of these slopes, what can you determine about the other factors likely to contribute to these mass movements?

The steep, exposed cliff face that forms where a slump mass has pulled away from the rest of the slope is a:

All of the following are common human- induced triggers of mass movement EXCEPT:

All of the following events were associated with the Madison Canyon mass- movement event of 1959 EXCEPT:

A First Look at Planet Earth - Its Origins, Systems, and Tectonic Plates

Minerals

Igneous Rocks and Processes

Volcanoes and Volcanism

Weathering - the Breakdown of Rocks

Sedimentary Processes, Environments, and Rocks

Metamorphism and Metamorphic Rocks

Telling Time Geologically

Earth Structures - Folds, Faults, and Fabrics

Earthquakes

The Earths Interior - Whats Going on Down There

Plate Tectonics and the Formation of the Earths Oceans

Continental Tectonics and the Formation of the Earths Continents

Streams and Floods

Groundwater

Glaciers and Ice Ages

Deserts and the Work of Winds

Shores and Coastal Processes

Human Use of the Earths Resources Appendices Glossary

Filters