erosion

Question 1

what is hydraulic action

Answer 1

• the weight of water forced into joints in rocks, trapping air
• force of water compresses air and creates a build up of pressure
• rock weakens and breaks off pieces

Question 2

what is abrasion

Answer 2

pebbles, stones are moved by waves and hurled against cliffs

Question 3

what is attrition

Answer 3

the wearing down of rocks as they rub against eachother, making them smaller and rounder

Question 4

what is solution

Answer 4

chemical reaction of seawater, the acidity increases and carbon based rock can be broken down