Question 1

Mass movement occurs when the resisting forces exceed the driving forces.

Accepted Answer

A) True 
 B)False  False

Question 2

Which is not a likely effect of snowfall on a mountain?

Accepted Answer

A)  increased weight 
B)  decreased friction as snowmelts 
C)  increased cohesive binding by ice crystals 
D)  mass movement 
A)  increased weight 
B)  decreased friction as snowmelts 
C)  increased cohesive binding by ice crystals 
D)  mass movement C

Question 3

Why does adding water to sand increase the angle of repose for the material?

Accepted Answer

A)  Water increases friction. 
B)  Water increases cohesion. 
C)  Water increases the oversteep angle. 
D)  Water decreases friction. 
A)  Water increases friction. 
B)  Water increases cohesion. 
C)  Water increases the oversteep angle. 
D)  Water decreases friction. B

Question 4

Describe GIS. What does it stand for, what does it do, etc.

Accepted Answer

GIS stands for geographic information sy

Question 5

Shaking regolith will have the effect of

Accepted Answer

A)  compaction, both wet and dry. 
B)  liquefaction, both wet and dry. 
C)  compaction when wet, and liquefaction when dry. 
D)  compaction when dry, and liquefaction when wet. 
A)  compaction, both wet and dry. 
B)  liquefaction, both wet and dry. 
C)  compaction when wet, and liquefaction when dry. 
D)  compaction when dry, and liquefaction when wet.

Question 6

________ increases as the roughness between two objects in contact with one another increases.

Accepted Answer

A)  Friction 
B)  Flow 
C)  Creep 
D)  Cohesion 
A)  Friction 
B)  Flow 
C)  Creep 
D)  Cohesion

Question 7

Which of the following factors does not favor motion and slope instability?

Accepted Answer

A)  increasing slope 
B)  smoother surfaces 
C)  the presence of water 
D)  the presence of vegetation 
A)  increasing slope 
B)  smoother surfaces 
C)  the presence of water 
D)  the presence of vegetation

Question 8

Which factor contributing to rock movement is not demonstrated by the brick-and-wood experiment?

Accepted Answer

A)  smoothness of rock 
B)  density of rock 
C)  presence of water 
D)  angle of slope 
A)  smoothness of rock 
B)  density of rock 
C)  presence of water 
D)  angle of slope

Question 9

How do joints, bedding planes, foliation, and faults affect mass movements?

Accepted Answer

They interrupt cohesion that w

Question 10

Which is not a characteristic of clay minerals that increases the likelihood of a slide?

Accepted Answer

A)  resistance to weathering 
B)  shrinking and swelling due to water and temperature 
C)  low cohesive strength when wet 
D)  low friction when wet 
A)  resistance to weathering 
B)  shrinking and swelling due to water and temperature 
C)  low cohesive strength when wet 
D)  low friction when wet

Question 11

Which three types of rocks are most commonly associated with more slides? Give an example of a location where this has been shown.

Accepted Answer

Clay-rich siltstone, mudstone, and weath

Question 12

Put the following events in order from those that occur with the greatest driving force to those that occur with the least driving force and/or have the least effect on hillside stability. 1. erosion 2. magma intrusion 3. volcanic eruption 4. liquefaction 5. earthquake

Accepted Answer

A)  1, 2, 3, 5, 4 
B)  2, 1, 4, 5, 3 
C)  3, 4, 5, 2, 1 
D)  4, 5, 2, 3, 1 
A)  1, 2, 3, 5, 4 
B)  2, 1, 4, 5, 3 
C)  3, 4, 5, 2, 1 
D)  4, 5, 2, 3, 1

Question 13

The maximum angle of a stable slope is called the angle of

Accepted Answer

A)  repose. 
B)  friction. 
C)  cohesion. 
D)  particle shapes. 
A)  repose. 
B)  friction. 
C)  cohesion. 
D)  particle shapes.

Question 14

Slumps are characterized as

Accepted Answer

A)  free falling through the air. 
B)  material moving as a coherent block along a planar surface. 
C)  rotational slides on curved surfaces. 
D)  flowing as a high-viscosity liquid. 
A)  free falling through the air. 
B)  material moving as a coherent block along a planar surface. 
C)  rotational slides on curved surfaces. 
D)  flowing as a high-viscosity liquid.

Question 15

Which option best describes the direction of the eruption of Mount St. Helens and the cause of this action, according to Figure 15.24 in your textbook?

Accepted Answer

A)  Magma pressure built up and caused a vertical eruption of magma and ash. 
B)  A rock slide released pressure on the magma, causing a horizontal eruption. 
C)  An earthquake sheared off part of the mountain, causing a horizontal eruption. 
D)  An earthquake opened a vent in the top of the mountain, releasing pressure on the magma and causing a vertical eruption. 
A)  Magma pressure built up and caused a vertical eruption of magma and ash. 
B)  A rock slide released pressure on the magma, causing a horizontal eruption. 
C)  An earthquake sheared off part of the mountain, causing a horizontal eruption. 
D)  An earthquake opened a vent in the top of the mountain, releasing pressure on the magma and causing a vertical eruption.

Question 16

How do rainfall and snowmelt trigger mass movements?

Accepted Answer

Water and melting snow add lub

Question 17

Why do high elevations make actively rising hilltops unstable?

Accepted Answer

High mountains are regions of

Question 18

Which of the following scenarios would be least susceptible to mass movements?

Accepted Answer

A)  steep slope, underlain by siltstone and mudstone 
B)  steep slope, underlain by sandstone and conglomerate 
C)  shallow slope, underlain by siltstone and mudstone 
D)  shallow slope, underlain by sandstone and conglomerate 
A)  steep slope, underlain by siltstone and mudstone 
B)  steep slope, underlain by sandstone and conglomerate 
C)  shallow slope, underlain by siltstone and mudstone 
D)  shallow slope, underlain by sandstone and conglomerate

Question 19

What happens when river slopes are uplifted beyond their maximum stable slope?

Accepted Answer

A)  They are usually returned to the maximum stable slope by landslides. 
B)  They are usually returned to the maximum stable angle by erosion. 
C)  They usually remain at the uplifted angle but are more unstable when earthquakes occur. 
D)  The river water fills the deeper crevice and maintains that depth. 
A)  They are usually returned to the maximum stable slope by landslides. 
B)  They are usually returned to the maximum stable angle by erosion. 
C)  They usually remain at the uplifted angle but are more unstable when earthquakes occur. 
D)  The river water fills the deeper crevice and maintains that depth.

Question 20

Which must be true for motion to begin to happen? What factor is important in determining if motion occurs?

Accepted Answer

The gravity force parallel to the surfac

Exam 15: Mass Movements: Landscapes in Motion

Mass movement occurs when the resisting forces exceed the driving forces.

Which is not a likely effect of snowfall on a mountain?

Why does adding water to sand increase the angle of repose for the material?

Describe GIS. What does it stand for, what does it do, etc.

Shaking regolith will have the effect of

________ increases as the roughness between two objects in contact with one another increases.

Which of the following factors does not favor motion and slope instability?

Which factor contributing to rock movement is not demonstrated by the brick-and-wood experiment?

How do joints, bedding planes, foliation, and faults affect mass movements?

Which is not a characteristic of clay minerals that increases the likelihood of a slide?

Which three types of rocks are most commonly associated with more slides? Give an example of a location where this has been shown.

Put the following events in order from those that occur with the greatest driving force to those that occur with the least driving force and/or have the least effect on hillside stability. 1. erosion 2. magma intrusion 3. volcanic eruption 4. liquefaction 5. earthquake

The maximum angle of a stable slope is called the angle of

Slumps are characterized as

Which option best describes the direction of the eruption of Mount St. Helens and the cause of this action, according to Figure 15.24 in your textbook?

How do rainfall and snowmelt trigger mass movements?

Why do high elevations make actively rising hilltops unstable?

Which of the following scenarios would be least susceptible to mass movements?

What happens when river slopes are uplifted beyond their maximum stable slope?

Which must be true for motion to begin to happen? What factor is important in determining if motion occurs?

Why Study Earth

Minerals: Building Blocks of the Planet

Rocks and Rock-Forming Processes

Formation of Magma and Igneous Rocks

Formation of Sediment and Sedimentary Rocks

Formation of Metamorphic Rocks

Earth Materials As Time Keepers

Earth Materials As Time Keepers

Making Earth

Motion Inside Earth

Deformation of Rocks

Global Tectonics: Plates and Plumes

Tectonics and Surface Relief

Soil Formation and Landscape Stability

Streams: Flowing Water Shapes the Landscape

Water Flowing Underground

Glaciers: Cold-Climate Sculptors of Continents

Shorelines: Changing Landscapes Where Land Meets Sea

Wind: a Global Geologic Process

Global Warming: Real Time Change in the Earth System

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