Weathering and Mass Movement

Question 1

Weathering

Answer 1

Break up and decay of exposed rock on the earths surface

Question 2

Physical / Mechanical Weathering

Answer 2

The disintegration of rocks without any chemical changes occurring
ie Freeze Thaw Weathering

Question 3

Chemical Weathering

Answer 3

The decomposition of rocks due to chemical reactions

ie Acidic rain and limestone

Question 4

Biological Weathering

Answer 4

Involves actions of flora, fauna, or animals

ie Plant roots are effective at growing into and expanding cracks in the rock

Question 5

Mass Movement

Answer 5

The downhill movement of material under the influence of gravity

Question 6

Rock Fall

Answer 6

Fragments of rock break away from the cliff face, often due to freeze thaw weathering

Question 7

Landslide

Answer 7

Blocks of rock slide downhill

Question 8

Mudflow

Answer 8

Saturated soil and weak rock flows downhill

Question 9

Rotational Slip

Answer 9

A weakened slump of saturated rock and soil along a curved surface