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Online Quiz
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1
The stability of a slope is increased when
A)its slope angle is increased during construction of a roadway
B)a building is constructed upon it
C)water is drained from the slope
D)vegetation is removed from the slope
2
Sandy soil has greatest strength when it is
A)dry
B)moist
C)saturated
D)quick
3
What process is mainly a result of soil expansion and contraction?
A)soil creep
B)landslide
C)mudflow
D)soil flowage
4
The angle of repose indicates the strength of soil when it has which moisture condition?
A)saturated
B)dry
C)quick
D)moist
5
Clay has no strength when it is
A)dry
B)moist
C)saturated
D)quick
6
Which mass movement involves material with the highest water content?
A)slump
B)rockfall
C)earthflow
D)mudflow
7
Which is the fastest moving mass movement?
A)slump
B)soil creep
C)avalanche
D)solifluction
8
The form of mass movement in which materials move in a disorganized, chaotic fashion is
A)slide
B)flow
C)rock fall
D)slump
9
Talus forms a steep slope because it is
A)coarse grained and angular
B)subject to soil creep
C)fine grained and rounded
D)usually saturated
10
Which is the slowest moving mass movement?
A)slump
B)soil creep
C)avalanche
D)solifluction
11
When soil freezes, it can
A)slump
B)flow
C)liquefy
D)heave
12
Rockfalls produce
A)mudflows
B)heaves
C)slumps
D)talus
13
The type of mass wasting that involves a rotational failure along a curved surface:
A)solifluction
B)slump
C)debris flow
D)debris avalanche
14
In granular soils, soil strength
A)is best when the soil is moist
B)is best when the soil is saturated
C)is best when the soil is dry
D)is not related to moisture content.
15
Which mass movement consists of the coarsest particles?
A)debris avalanche
B)earthflow
C)soil creep
D)mudflow
16
Rock bolts
A)are used to stabilize soil slopes
B)were tried once with disastrous consequences
C)are used to stabilize potential rock slides
D)are placed into rock beneath soil to prevent the soil from sliding.
17
In which type of mass wasting movement does the moving material retain its original shape?
A)heave
B)slide
C)creep
D)flow
18
A head scarp and hummocky toe are characteristics of a(n)
A)slump
B)heave
C)talus
D)rockfall
19
Clays that are deposited in a marine environment
A)are susceptible to quick conditions
B)are never susceptible to quick conditions
C)are the strongest, most stable type of clay deposit
D)are stronger when wet than when dry
20
Which change can lead to slope failure?
A)rise of water table in slope material
B)decline of water table in slope material
C)removal of material from the top of a slope
D)addition of material to the base of a slope
21
Landslides can also cause
A)earthquakes.
B)volcanic eruptions.
C)flooding.
D)seismic gaps.
22
Vegetation tends to increase slope stability by
A)adding water to the soil.
B)removing weight from the slope.
C)holding rainwater on the surface.
D)holding soil in place with roots.
23
One factor that influences slope stability but which humans can't alter is
A)vegetation cover.
B)geologic structure.
C)slope angle.
D)water content.
24
A slope that looks stable but has bent trees, tilted fence posts, and cracked walls may actually have
A)soil creep.
B)occasional mudflows.
C)modest landslides.
D)frequent rock fall.
25
A 1960 flood in the Italian Vaiont River Valley came from a landslide that
A)filled the valley.
B)splashed into a reservoir.
C)hit a dam and broke it.
D)filled a nearby wetland.





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