Geography, 24.07.2019 22:30 Svetakotok
How do the strength and cohesion of clay-rich regolith or soil change with the addition of water?
select one:
a. water does not affect cohesion but lowers strength.
b.
water increases strength and cohesion.
c. water reduces strength of clays but raises soil cohesion.
d. water lowers strength and cohesion.
question 41
how do freezing, thawing, wetting and drying contribute to soil creep?
select one:
a. the soil expands and contracts, lifting particles and dropping them a slight distance downslope.
b. gravity exerts a stronger force when soil is wet and thawed.
c. the soil becomes much weaker when dry and frozen.
d. eventually, these cause the soil and regolith to suddenly slide down slope.
question 42
all of the following factors affect mass wasting except for
select one:
a. force due to gravity
b. amount of water
c. geologic age of rocks
d. angle of the slope
question 43
which of the following is one of the most common anthropogenic (man made) cause of mass wasting?
select one:
a. dam construction
b. building construction
c. road construction
d. agriculture
question 44
which type of sediment deposit can fail and lead to a mass wasting event when the amount of water is decreased between the grains?
select one:
a. boulders
b. silt
c. clay
d. sand
Answers: 1
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How do the strength and cohesion of clay-rich regolith or soil change with the addition of water?
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