Mass Wasting

Question 1

Mass wasting

Answer 1

Downhill movement of weathered rock particles, soil by gravity.
(Sudden/violent/gradual)

Question 2

Causes of mass wasting

Answer 2

Natural or man made causes make slopes unstable
Water seeps into soil, soil gets heavy and expands
Freezing/thawing=contract/expand

Question 3

Types of mass wasting

Answer 3

Scree/Talus
Soil creep
Landslide
Mud and debris flow
Slump
Rockfalls and avalanches
Solifluction

Question 4

Scree/Talus

Answer 4

Steep rocky slope
Water enters cracks in rock and freezes
Rock breaks apart and falls down

Question 5

Soil creep

Answer 5

Imperceptible creep of soil downslope

Leaning trees, fences, etc.

Question 6

Landslide

Answer 6

Rapid movement of soil downslope

Rock is weathered into soil (vegetation)

Question 7

Mud and debris flow

Answer 7

Soil flows downhill like liquid
Sandy soils are prone
Highway 3A east of Keremeos

Question 8

Slump

Answer 8

Slab of land breaks away, top layer of soil vegetation remains intact.

Question 9

Rockfalls/avalanches

Answer 9

Mass of snow/ice that breaks away and slides down mountain slope.