Coasts Flashcards
1
Q
How does long shore drift occur (3)
A
Waves approach coast then awash moved up the beach at an angle, backwash drains straight back down the beach gradually moving material along beach in zig zag movement
2
Q
How are bays formed
A
By Softer rock getting eroded
3
Q
When does splits form
A
When coastline changes direction
4
Q
What is a gabion
A
Large boulders placed in cages
5
Q
What are groynes designed to stop
A
Long shore drift
6
Q
What are revetments and what are they designed for
A
Wooden walls and designed to absorb wave energy
7
Q
what is the difference for constructive and destructive waves
A
constructive has stronger swash, has lower frequency but destructive has stronger backwash
