Erosion

Question 1

What is abrasion

Answer 1

It is when the waves throw sand, pebbles and even boulders against the cliff face. This works like sandpaper and the cliff is worn away. This is a very powerful form of erosion especially in storms

Question 2

What is hydraulic action

Answer 2

This happens when the waves force water and air into cracks in the cliff face. The parcels of air are compressed by the surging wave but when the wave retracts the air expands explosively. This weakens the crack causing the rock to shatter

Question 3

What is solution

Answer 3

This happens when the sea water dissolves soluble material from the rocks. It often happens along chalk or limestone coastlines

Question 4

What is attrition

Answer 4

Rocks and boulders already eroded from the coast are knocked together and are slowly worn down into smaller, smoother, rounder pieces

Question 5

What is erosion

Answer 5

Erosion is the wearing away of touch and sediment

Question 6

What are the four types of erosion

Answer 6

Abrasion
Hydraulic action
Attrition
Solution