Chapter 14 Flashcards

1
Q

Mass wasting

A

Downslope movement of rock, regolith and soil under the influence of gravity that
doesn’t require a transportation medium such as water, wind or ice.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Landslide

A

Non-specific term for rapid mass movements of rock or soil

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Classification of mass wasting processes (3)

A
  1. Type of motion
  2. Type of material
  3. Rate of movement
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Types of motions (3)

A
  1. Falling
  2. Sliding
  3. Flowing
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Falling

A

Motion vertically downwards, often through the air.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Sliding

A

A cohesive unit of rock or soil moves along a clearly defined plane. Caused by weak planes in folded and faulted rocks, glacial erosion, mines.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Slump

A

Special case of sliding where the material rotates as it moves along a well defined curved

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Flowing

A

Material moves as viscous fluid with turbulent flow.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Types of material in mass movement (2)

A

Unconsolidated (debris, earth flow) or bedrock (rock slide)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Rates of movement (3)

A

Creep rate, freeze thaw cycle, solifluction (water saturated over solid layer).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Controls and Triggers of mass wasting (6)

A

Shear stress, friction, water, vegetation, construction, earthquakes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Oversteepening

A

A slope that becomes steeper than the angle of repose (25-40°).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Landslide hazard reduction methods (2)

A

Barriers/protection, and landslide forecasts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly