Formation of a Wave Cut Platform

Question 1

Weaknesses…undercut…wave-cut notch

Answer 1

weaknesses such as joints or cracks in the cliff are undercut by erosion to form a wave-cut notch

Question 2

These cracks are eroded by hydraulic action- WHAT is hydraulic action???

Answer 2

When the sheer force of the waves entering cracks in the rock, compressing the air and forcing pieces of rock to break off

Question 3

What is abrasion?

Answer 3

Abrasion is when rocks carried by the water are thrown against the cliff causing abrasive action, wearing away the rock

Question 4

Rock overhangs…

Answer 4

The rock above overhangs over the notch

Question 5

Unsupported overhang collapses

Answer 5

Unsupported overhang collapses due to the weight and gravity

Question 6

Cliff retreats, what does this leave?

Answer 6

The cliff retreats inland, leaving a gently-sloping rocky surface called a wave-cut platform which extends out to sea away from the cliff