The flashcards below were created by user
Anonymous
on FreezingBlue Flashcards.
-
What is longshore drift
beach material/sediment transported along the coast
waves hit at an angle (swash) due to prevailing wind
dragged back by backwash
-
What is swash?
When waves break on to a beach at an angle, material is pushed up the beach at the same angle by the swash
-
what is backwash?
material is pushed back down the beach by the backwash at ninety degrees to the coast.
-
How are beaches formed?
made up of eroded material that has been transported from elsewhere using longshore drift
Constructive waves help to build up beaches.
-
what is the formation of a stump?
- Cracks in cliff face+waves with sand+hydraulic action
- =wave cut notch
erodes over time
=cave
breaks through
=arch
Arch collapses
=stack
attacks base
=stump
Weathering and erosion can create caves, arches, stacks and stumps along a headland.
-
what is the process of cliff erosion
- Weather weakens the top of the cliff.
- The sea attacks the base of the cliff forming a wave-cut notch.
- The notch increases in size causing the cliff to collapse.
- The backwash carries the rubble towards the sea forming a wave-cut platform.
- The process repeats and the cliff continues to retreat.
-
-
what is a headland?
Hard/soft rock attacked by destructive waves
section of land left stuck out
headland
|
|