Coasts

Question 1

When does mass movement happen?

Answer 1

When the force of gravity acting on a slope is greater than the force supporting it

Question 2

4 processes of erosion

Answer 2

Hydraulic action
Abrasion
Attrition
Solution

Question 3

Hydraulic power

Answer 3

Waves crash against rock and compress the air in the cracks. This puts pressure on the rock and repeated compression widens the cracks and makes bits of rock break off

Question 4

Abrasion

Answer 4

Eroded particles in the water scrape and rub against rock, removing small pieces

Question 5

Attrition

Answer 5

Eroded particles in the water smash into each other and break into smaller fragments. Their edges also get rounded off as they rub together

Question 6

Solution

Answer 6

Weak carbonic acid in seawater dissolves rock like chalk and limestone

Question 7

4 processes of transportation

Answer 7

Traction
Suspension
Saltation
Solution

Question 8

Traction

Answer 8

Large particles like boulders are pushed along the sea bed by the force of the water

Question 9

Suspension

Answer 9

Small particles like silt and clay are carried along in the water

Question 10

Saltation

Answer 10

Pebble sized particles are bounced along the sea bed by the force of the water

Question 11

Solution

Answer 11

Soluble materials dissolve in the water and are carried along