erosional landforms

Question 1

blowhole

Answer 1

vertical erosion, hydraulic action and solution

Question 2

wave cut platform

Answer 2

limetsone is jointed, HA takes place
when wave breaks due to high energy, undercuts cliff, forms wave cut notch
increased pressure until it collapses
cliff retreats leaving a platform

Question 3

cave

Answer 3

cracks at base exposed to HA
further widened by salt crystallisation
turn into wave cut notch< abrasion deepens notch to form caves

Question 4

arches

Answer 4

wave refraction occurs, concentrate energy on sides, deepening the notch
waves cut through and form arches

Question 5

stack

Answer 5

arch becomes unstable, collapses and forms stacks
further erosion at base
stack collapses to a stump, through attrition, deposited with bay