Mass movement for short questions

Question 1

define mass movement

Answer 1

The process by which loose weathered material moves downslope under the influence of gravity

Question 2

What is loose weathered material close to the surface called?

Answer 2

Regolith

Question 3

The factors affecting surface processes of mass movement

Answer 3

• slope
• water content
• Slope material
• Vegetation
• Human activity
• Natural disasters/ tectonic activity.

Question 4

A slow type of mass movement

Answer 4

Soil creep

Question 5

A moderate speed of mass movement

Answer 5

earthflow
slumping

Question 6

Fast speed of mass movement

Answer 6

Rockfall
landslide
mudflow
bog burst
avalanche

Question 7

Causes of soil creep

Answer 7

Freeze thaw action and wetting and drying cycles

Question 8

Evidence of soil creep

Answer 8

Terracettes.
Vertical objects embedded in the soilbtilting downslope
Collapsing or bulging of walls- regolith builds up behind.

Question 9

Terracettes

Answer 9

ridges that form on slopes due to the forward movement of soil. They run parallel across the slope giving a stepped appearance.

Question 10

4 categories of mass movement

Answer 10

Creeps: soil creep
slides: rockslides + slumping
Flows: mudflows, lahars, bogflows + earthflows
Falls: Rock falls, avalanches + landslides