old harry Flashcards
1
Q
where is old harry
A
foreland headland in dorset,swanage bay
1
Q
what is hydralic action
A
action erosion from the power of air forced into rocks
2
Q
what is abrasion
A
other rocks in the water hitting into the cliff face
3
Q
what is solution
A
the salt in the sea dissolving rocks
4
Q
attrition
A
loosened rocks bumping into eachother
5
Q
how was old harry formed
A
-cracks near the base of the headland start to be eroded
-cracks widen through abrasion forms a cave
-the cave then becomes larger due to hydraulic action until it forms an arch
-the arch widens until the cliff falls forming a stack
6
Q
how is a stump formed
A
-overtime stack will be eroded forming a stump
