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Which approach addresses the factor that is considered to be the major culprit in land instability draining water from the slide mass

Which approach addresses the factor that is considered to be "the major culprit" in land instability?

a.draining water from the slide mass

b.excavating

c.redistribution of mass

d.installing retaining walls

e.installing shear keys

12.What is a hydrauger?

a.a sensitive device for detecting movement of landslides

b.a horizontal drain pipe

c.a drilling device for making test borings

d.the opposite of a low drauger

e.a device for testing soil and rock strength

13.What device is commonly used to strengthen cracked or jointed rock masses in tunnels and steep road cuts?

a.pilings

b.plaster

c.rock bolts

d.superglue

e.corrugated metal sheets

14.What is likely to happen, at the surface, if large volumes of water, oil, or gas are removed from layers of rock deep underground?

a.settlement

b.deep subsidence

c.shallow subsidence

d.magmatic intrusion

e.hydrocompaction

15.What is a common approach used to deal with collapsible soil when constructing water canals?

a.Waterproof it with an impermeable barrier.

b.Remove all of it and replace it with an engineered fill.

c.Precollapse it by soaking it with water.

d.Use a reinforced concrete lining for the canal.

e.Extend sections of very large diameter pipe through these areas.

16.Judge the following sentence according to the criteria given below: Californian mountain slopes burned by wildfires are not very susceptible to debris flows the following wet season BECAUSE scorched chaparral vegetation releases a waxy liquid that waterproofs the ground.

a.The assertion and the reason are both correct, and the reason is valid.

b.The assertion and the reason are both correct, but the reason is invalid.

c.The assertion is correct, but the reason is incorrect.

d.The assertion is incorrect, but the reason is correct.

e.Both the assertion and the reason are incorrect.

17.Which of the following set of circumstances has the greatest risk for debris flows?

a.rainfall for 8 hours with an intensity of 0.2 inches/hour in semiarid California

b.rainfall for 5 hours with an intensity of 0.7 inches/hour in Contra Costa County

c.rainfall for 10 hours with an intensity of 0.4 inches/hour in Marin County

d.rainfall for 12 hours with an intensity of 0.5 inches/hour in Contra Costa County

e.rainfall for 5 hours with an intensity of 0.7 inches/hour in Marin County

18.What are the most common kinds of landslides?

a.block glides

b.creeps

c.debris flows

d.lahars

e.slumps

19.Judge the following sentence according to the criteria given below: The frequency of rockfalls can be expected to increase with climate change BECAUSE retreating alpine glaciers can be expected to expose additional steep bedrock-walls.

a.The assertion and the reason are both correct, and the reason is valid.

b.The assertion and the reason are both correct, but the reason is invalid.

c.The assertion is correct, but the reason is incorrect.

d.The assertion is incorrect, but the reason is correct.

e.Both the assertion and the reason are incorrect.

20.Which of the following is NOT an example of subsidence?

a.submerged land in the Gulf of Alaska

b.the low-lying areas of New Orleans

c.Palace of Fine Arts, Mexico City

d.Baytown, Texas

e.The Leaning Tower of Pisa

Feb 14 2020 View more View Less

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