coastal depositions Flashcards
1
Q
spit
A
- process
- form when there is a change in direction on a coastline
- This allows a sheltered area for deposition
- Material slowly builds up to appear above the water and the spit develops as long as the supply of deposition is greater than the amount of erosion
- example is Culbin Sands
2
Q
tombolo
A
- process
- To begin with, a spit will form when there is a change in direction on a coastline
- The spit extends out from the mainland, connecting to an island to form a tombolo
- Material slowly builds up to appear above the water line
3
Q
the start of each answer
deposition processes
A
- (depos) are formed by the process of longshore drift which is lateral/zig-zag movement of the waves
- Swash is where waves push material up the beach at an angle due to the prevailing wind
- the returning backwash is dragged back down the beach at right angles due to gravity
4
Q
sandbars*
A
- processes
- sandbars form when there is a change in direction on a coastline allowing a sheltered area for deposition material slowly builds up to appear above the water
- the bar develops as long as the supply of deposits is greater than the amount of erosion
- if a spit reaches the other side a of a bay then a sandbar is formed
- An example is Slapton Sands