Coasts - Headlands Flashcards
Year 7 Coasts Revision
Is a bay formed from hard rock or soft rock?
Soft rock
Is a headland formed from hard rock or soft rock?
Hard rock
Which form of erosion widens the base of cracks in headlands?
Abrasion. Rocks in the sea will be thrown against the base of headlands by the waves.
Which form of erosion widens the top of cracks in headlands?
Hydraulic action. The air is compressed into the crack, weakening the rock.
If a crack in a headland recieves continual erosion, what will form?
A sea cave.
Which form of erosion compresses air into cracks and weakens the rock?
Hydraulic action
What is formed if a sea cave, through erosion, goes through to the other side of a headland?
An arch.
Why are headlands formed from harder rock?
Harder rocks are more resistant to erosion.
What can speed up the formation of an arch from a sea cave?
Twin caves on opposite sides of the headland meeting in the middle.
There are no longer 12 Apostles off the coast of Australia as some stacks have collapsed. What remains when a stack collapses?
A stump.
What is the name of the arch found on the Dorset Coast?
Durdle Door.
What is the name of the stack near Swannage on the Dorset Coast?
Old Harry
What is the name of the arch that attracts tourists on the island of Gozo near Malta? (Mr Stevens scuba dived beneath it)
The Azure Window.
When an arch can no longer support itself, it collapses. What is left?
A stack.
What are the names of the stacks found off the south coast of Australia? The 12…
The 12 Apostles
What is the name of the stump next to the stack called Old Harry?
Old Harry’s Wife.
