Subaerial processes

Question 1

What is freeze-thaw weathering

Answer 1

Water repeatedly freezing and melting in cracks in rocks. As it freezes, the water expands by 5-7%. This causes pressure to build around the rock

Question 2

What is biological weathering

Answer 2

Paddock fish is a shell fish that drills into rocks and are active in chalk areas. Seaweed attaches to rocks and can sway in rough seas, causing erosion

Question 3

What is oxidation

Answer 3

Causes rocks to disintegrate when the oxygen dissolved in water reacts with some rocks and miracles

Question 4

What is hydration?

Answer 4

Water is added to rocks which causes it to expand, creating stress which can cause the rock to disintegrate

Question 5

What isw hydrolysis

Answer 5

mildly acidic water reacts or combines with minerals in the rock to create clays or dissolvable salts

Question 6

What is carbonation

Answer 6

when carbon dioxide dissolved in rainwater makes a weak carbonic acid. reacts with calcium carbonate un rocks like limestone and chalk