Weathering Flashcards
1
Q
Definition
A
Disintegration of rock in citu and is classified as sub-aerial weathering
2
Q
Physical
A
Involves the break up of rock without any chemical changes
Freeze thaw
Wetting and drying, rocks rich in clay expand when wet and contract dry, crack and break up
3
Q
Biological
A
Breakdown via organic activity
Plants can grow into crack on cliff face, cracks widen as roots grow
Birds burrowing
4
Q
Chemical
A
chemical reaction where salts dissolve or material becomes eroded
Carbonation- rainwater absorbs co2 from air to form weak carbonic acid, calcium bicarbonate formed which is dissolved easily
Oxidation
