weathering and erosion Flashcards
1
Q
What is mechanical weathering?
A
Physical disintigration of rocks by sun and frost. does not alter chemical composition of rocks
2
Q
where does it occur?
A
In places where there is little or no vegetation cover eg mountains and deserts
3
Q
what types are there
A
Exfoliation and freeze thaw action
4
Q
what part of the rock absorbs more heat?
A
The outer layer
5
Q
what does exfoliation require?
A
Moisture
