Question 1

What did the USGS discover when they studied the Slumgullion feature?

Accepted Answer

A)  there were different parts with different ages
B)  movement formed folds, faults, fissures, and zones of shearing
C)  some parts of the material moved faster than other parts
D)  All of these.E) B) and C)
F) A) and B)

Question 2

What type of slope failure is shown in this figure?

Accepted Answer

A)  rotational slide
B)  creep
C)  earth flow
D)  debris flow
E)  rock slideF) B) and D)
G) B) and C)

Question 3

Which of the following features is formed by the collapse of caves?

Accepted Answer

A)  travertine
B)  stalagmite
C)  stalactite
D)  sinkhole
E)  flowstoneF) A) and C)
G) None of the above

Question 4

What is the main reason why the oceans are salty?

Accepted Answer

A)  The early oceans were salty because comets are dirty snowballs.
B)  Salt deposits that formed early in Earth's history become dissolved by modern oceans.
C)  Weathering of rocks releases chemical elements that make the oceans salty.
D)  Blowing salt crystals become incorporated into clouds and falls with the rainfall.E) A) and B)
F) A) and D)

Question 5

What type of slope failure is shown in this figure?

Accepted Answer

A)  rotational slide
B)  creep
C)  earth flow
D)  debris flow
E)  rock avalancheF) B) and D)
G) C) and E)

Question 6

Which of the following slope failures is most likely to cause large numbers of casualties?

Accepted Answer

A)  creep
B)  debris slide
C)  earth flow
D)  rotational slide
E)  rock avalancheF) A) and B)
G) None of the above

Question 7

Which area would most likely cause the least problems with keeping roads in good shape?

Accepted Answer

A)  Bent Fence Hills
B)  Wild Ride Valley
C)  the flat area above the river terraces
D)  a road built directly below the cliffs of Flattop MountainE) A) and B)
F) A) and C)

Question 8

The angle of repose is

Accepted Answer

A)  the angle of bedding on hills where layers dip parallel to the slope.
B)  the angle of fractures on hills where fractures dip parallel to the slope.
C)  the angle at which rainfall strikes an unstable slope.
D)  the steepest angle at which loose material remains stable.E) C) and D)
F) B) and D)

Question 9

What factors lead to the Viaont landslide disaster?

Accepted Answer

A)  a volcanic eruption shook the ground
B)  a major earthquake shook the ground
C)  the sedimentary layers dipped downslope toward the reservoir
D)  All of these.E) A) and C)
F) All of the above

Question 10

Which of the following generally is true about caves formed by dissolution?

Accepted Answer

A)  Acidic waters dissolve feldspar in granite, producing clay.
B)  Groundwater removes material from limestone.
C)  Hot geothermal waters introduce acids into shallow rocks.
D)  Carbon dioxide rises from depth and dissolves calcite and clay.E) A) and B)
F) B) and C)

Question 11

Which of the following factors control how minerals weather?

Accepted Answer

A)  the strength of the chemical bonds in the mineral
B)  what type of mineral is present
C)  the temperature at which the original minerals formed
D)  whether a mineral typically crystallizes early or late in Bowen's Reaction Series
E)  All of these.F) A) and C)
G) B) and C)

Question 12

The joints in the photograph mimic topography, indicating that they formed

Accepted Answer

A)  while the granite was still molten.
B)  while the rocks were still buried at great depth.
C)  when the weight of overlying rocks was unloaded, allowing expansion along the joints.
D)  along a subduction zone.E) A) and B)
F) A) and C)

Question 13

Which state would most likely have the highest ratio of physical weathering to chemical weathering rates?

Accepted Answer

A)  Florida
B)  Alaska
C)  New York
D)  NevadaE) A) and D)
F) A) and B)

Question 14

The rock type that is the most common setting for caves formed by dissolution of a rock is

Accepted Answer

A)  well-sorted sandstone.
B)  gray limestone.
C)  dark porous lava flows.
D)  gray granite.
E)  slate.F) B) and D)
G) A) and C)

Question 15

All other factors being equal, a slope facing away from the Sun will tend to have

Accepted Answer

A)  faster soil formation than the slope in direct sunlight, primarily because chemical weathering processes will be accelerated.
B)  faster soil formation than the slope in direct sunlight, primarily because physical weathering processes will be accelerated.
C)  slower soil formation than the slope in direct sunlight, primarily because chemical weathering processes will be slower.
D)  slower soil formation than the slope in direct sunlight, primarily because physical weathering processes will be slower.E) None of the above
F) All of the above

Question 16

What is the main type of weathering illustrated by this weathered limestone?

Accepted Answer

A)  physical weathering
B)  dissolution
C)  oxidation
D)  exfoliationE) A) and D)
F) None of the above

Question 17

Which of the following might indicate that slopes adjacent to this landslide might fail?

Accepted Answer

A)  they have the same steepness as the slope that failed
B)  they appear to have a similar geology setting
C)  one part of the slope has already failed
D)  All of these.E) C) and D)
F) B) and D)

Question 18

How does the character of a rock influence weathering?

Accepted Answer

A)  Fractures and other discontinuities block the entry of water into a rock and so make the rock more resistant to weathering.
B)  Minerals that are soluble can be dissolved and reprecipitated and so are resistant to weathering.
C)  Rocks that are broken have more surface area and so weather faster.
D)  Rocks that are easily weathered and eroded generally form steep cliffs.
E)  None of these.F) A) and B)
G) B) and C)

Question 19

Which of the following has the lowest potential for landslides?

Accepted Answer

A)  Pacific Northwest
B)  southern California
C)  bluffs along rivers in the central U.S.
D)  Florida
E)  Appalachian MountainsF) C) and D)
G) A) and D)

Question 20

Which of the following slope failures is least likely to cause casualties?

Accepted Answer

A)  rock avalanche
B)  debris flow
C)  creep
D)  rock slide
E)  rock fallF) A) and E)
G) A) and D)

Exam 12: Weathering and Mass Wasting

The joints in the photograph mimic topography, indicating that they formed

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The angle of repose is

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What type of slope failure is shown in this figure?

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Which of the following has the lowest potential for landslides?

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Which state would most likely have the highest ratio of physical weathering to chemical weathering rates?

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How does the character of a rock influence weathering?

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Which of the following slope failures is most likely to cause large numbers of casualties?

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What is the main type of weathering illustrated by this weathered limestone?

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Which of the following features is formed by the collapse of caves?

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The rock type that is the most common setting for caves formed by dissolution of a rock is

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Which of the following factors control how minerals weather?

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What type of slope failure is shown in this figure?

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Which area would most likely cause the least problems with keeping roads in good shape?

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What did the USGS discover when they studied the Slumgullion feature?

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What factors lead to the Viaont landslide disaster?

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What is the main reason why the oceans are salty?

Correct AnswerverifiedShow Answer

Which of the following slope failures is least likely to cause casualties?

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Which of the following might indicate that slopes adjacent to this landslide might fail?

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All other factors being equal, a slope facing away from the Sun will tend to have

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Which of the following generally is true about caves formed by dissolution?

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