Coasts - Depositional Landforms Flashcards

1
Q

swash

A

waves, driven by prevailing wind, push material up beach at an angle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

backwash

A

sediment dragged back by g down the beach at 90º

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

spit

A
  1. spit = narrow accumulation of sand/gravel deposits w/ 1 end attached to the mainland & the other end projecting out into sea (1)
  2. sand spits r formed via longshore drift, explain (1)
  3. explain swash (1)
  4. explain backwash (1)
  5. spits form when theres a change in direction on coastline but longshore drift continues (1)
  6. sediment is deposited in shallow water as waves lose energy & eventually builds up above sea level (1)
  7. spit develops as long as supply of deposits > amount of erosion (1)
  8. shape can become hooked or curved at end in response to changes in wind direction (1) in sheltered area behind the spit, deposition occurs = marsh & mudflats can develop (1)
  9. e.g. Hurst spit, Hampshire (1)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

longshore drift

A

carries sediment along the beach in a zig-zag motion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

tombolo

A
  1. tombolo = narrow accumulation of sand/gravel deposits w/ 1 end attached to the mainland & the other end attached to 1/2 islands (1)
  2. sand spits r formed via longshore drift, explain (1)
  3. explain swash (1)
  4. explain backwash (1)
  5. spits form when theres a change in direction on coastline but longshore drift continues (1)
  6. sediment is deposited in shallow water as waves lose energy & eventually builds up above sea level (1)
  7. spit develops as long as supply of deposits > amount of erosion (1)
  8. e.g. chesil beach, dorset which connects isle of portland to dorset coast (1)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

bar

A
  1. bar = narrow accumulation of sand/gravel deposits that links two headlands together (1)
  2. sand spits r formed via longshore drift, explain (1)
  3. explain swash (1)
  4. explain backwash (1)
  5. spits form when theres a change in direction on coastline but longshore drift continues (1)
  6. sediment is deposited in shallow water as waves lose energy & eventually builds up above sea level (1)
  7. spit develops as long as supply of deposits > amount of erosion (1)
  8. e.g. slapton ley (1)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly