HW 5

Question 1

What is defined as the gravitationally caused downslope transport of rock, regolith, snow or ice?

Answer 1

mass wasting

Question 2

What is defined as a general term for unconsolidated material at the Earth’s surface, including soil, uncemented sediment, and weathered rock?

Answer 2

regolith

Question 3

Why isn’t Earth’s surface flat?

Answer 3

plate tectonics

Question 4

What causes erosion

Answer 4

ALL OF THESE
water
ice
wind

Question 5

Steeper slopes are more susceptible to mass wasting

Answer 5

true

Question 6

Glaciers carve what shape valley?

Answer 6

U

Question 7

Fill in the blank:

If the downslope gravity ________ the resistance friction, material slides

Answer 7

exceeds

Question 8

Safety factor= ?

Answer 8

resistance stress / downslope shear stress

Question 9

The slowest type of mass wasting event is what?

Answer 9

creep

Question 10

What is the term for when a volcano erupts and the hot ash mixes with water creating a volcanic mudflow?

Answer 10

lahar

Question 11

Snow avalanches are not examples of mass wasting.

Answer 11

false

Question 12

Which of the following is NOT a trigger for mass wasting?

Answer 12

Revegetation

Question 13

Geologic studies can help prevent mass wasting fatalities by identifying where they are likely to occur

Answer 13

True

Question 14

Deforestation is a major contributor to mass wasting.

Answer 14

True

Question 15

Detecting the early start of mass wasting can save lives.

Answer 15

true

Question 16

In an area of high risk for mass wasting there are no options for mitigation and humans should never live there or pass through the area.

Answer 16

false