Question 1

What is the ultimate cause of mass wasting?

Accepted Answer

A)  water 
B)  slope 
C)  earthquakes 
D)  gravity 
E)  wind

Question 2

How does the biosphere contribute to soil creep?

Accepted Answer

The answer of How does the biosphere contribute to soil...

Question 3

Why are rock falls one of the most common of mass-wasting processes?

Accepted Answer

The answer of Why are rock falls one of the...

Question 4

Slumps occur primarily in coherent layered rocks with variable physical properties.

Accepted Answer

A) True 
 B)False

Question 5

Human-induced subsidence in coastal areas increases flood potential.

Accepted Answer

A) True 
 B)False

Question 6

Debris flows are uncommon in desert areas.

Accepted Answer

A) True 
 B)False

Question 7

Some subsidence problems can be reversed by injecting water into the ground.

Accepted Answer

A) True 
 B)False

Question 8

The mineral benitoite is commonly involved in slope failures.

Accepted Answer

A) True 
 B)False

Question 9

All subsidence problems are human-induced.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following is NOT an example of subsidence?

Accepted Answer

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

Question 11

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.

Accepted Answer

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.

Question 12

If you pile up dry sand, it will always have a slope angle of about 35 degrees? What is this angle called?

Accepted Answer

A)  dip slope 
B)  dip angle 
C)  angle of repose 
D)  angle of inclination 
E)  angle of declination

Question 13

What can you conclude from the fact that the states in the U.S. having the lowest landslide severity are all either in the central part of the country or are in coastal areas?

Accepted Answer

The answer of What can you conclude from the fact...

Question 14

What are the most common kinds of landslides?

Accepted Answer

A)  block glides 
B)  creeps 
C)  debris flows 
D)  lahars 
E)  slumps

Question 15

What are some important clues that indicate that a slope has experienced landslide activity in the distant past?

Accepted Answer

The answer of What are some important clues that indicate...

Question 16

When driving forces equal resisting forces, the factor of safety is 1.0.

Accepted Answer

A) True 
 B)False

Question 17

Forces that tend to keep a landslide in motion are called driving forces.

Accepted Answer

A) True 
 B)False

Question 18

El Niño years are particularly hazardous for mass wasting in California.

Accepted Answer

A) True 
 B)False

Question 19

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

Accepted Answer

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

Question 20

Building codes are an ineffective way to reduce landslide damage and just increase costs.

Accepted Answer

A) True 
 B)False

Exam 7: Mass Wasting and Subsidence

What is the ultimate cause of mass wasting?

How does the biosphere contribute to soil creep?

Why are rock falls one of the most common of mass-wasting processes?

Slumps occur primarily in coherent layered rocks with variable physical properties.

Human-induced subsidence in coastal areas increases flood potential.

Debris flows are uncommon in desert areas.

Some subsidence problems can be reversed by injecting water into the ground.

The mineral benitoite is commonly involved in slope failures.

All subsidence problems are human-induced.

Which of the following is NOT an example of subsidence?

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.

If you pile up dry sand, it will always have a slope angle of about 35 degrees? What is this angle called?

What can you conclude from the fact that the states in the U.S. having the lowest landslide severity are all either in the central part of the country or are in coastal areas?

What are the most common kinds of landslides?

What are some important clues that indicate that a slope has experienced landslide activity in the distant past?

When driving forces equal resisting forces, the factor of safety is 1.0.

Forces that tend to keep a landslide in motion are called driving forces.

El Niño years are particularly hazardous for mass wasting in California.

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

Building codes are an ineffective way to reduce landslide damage and just increase costs.