Erosional Landforms

Question 1

Cliffs and wave-cut platforms

Answer 1

• Erosion happens at the base, which creates a wave-cut notch, which causes the cliff to become unstable and collapse (retreats inland)
  -Which then leaves behind a wave-cut platform, a flat, exposed rock area at the base of the cliff

Question 2

Headlands and Bays

Answer 2

-Formes on discordant coastlines (alternating bands of hard and soft rock)
-Soft rock erodes faster, causing bays to form
-Hard rock resists erosion, which causes headlands

Question 3

Caves, Arches, Stacks and stumps

Answer 3

-Form on headlands due to marine erosion exploting creaks and weaknesses.
1) Cave erosion enlarges a crack
2) Arch Cave deepened and broke through the headland
3) The stack roof collapses, leaving an isolated pillar
4) Stump Stack erodes and collapses, leaving a low stump
Example- Old Harry Rock, Dorset

Question 4

Geos and Blowholes

Answer 4

• Geo- A narrow, steep-sided inlet formed when a cave collapses along a joint or fault
  -Blowhole- Forms when a cave grows upward and breaks through to the cliff top