Long-Shore Drift, Waves, Storm Surge, Isostatic Recovery Flashcards
1.What is Longshore drift?
The movement of sand/sediment moving ALONG the beach.
2.What is swash?
The movement of sand/sediment UP the beach by the wave.
3.What is backwash?
The movement of sand/sediment back DOWN the beach by the wave.
4.What are the 5 features of destructive waves?
- Occur in storm conditions.
- Have high energy.
- Long fetch (travelled a long distance).
- Responsible for erosion.
- Greater backwash than swash.
5.What are the 5 features of constructive waves?
- Occur in calm conditions.
- Have low energy.
- Transport material by longshore drift.
- Responsible for deposition.
- Greater swash than backwash.
6.What 3 landforms are created by Longshore Drift
- Spit.
- Bar.
- Tombolo.
7.Why is cornwall more vulnerable to coastal erosion?
- Destructive waves.
- Long Fetch.
8.What is a storm surge?
Change in sea level that is caused by a storm.
9.What causes a storm surge?
Low air pressure causes a bulge in the sea.
Bulge is pushed forward by the wind.
10.If a storm surge happens during low tide coastal flooding is highly likely
True and False (depending on the hight of land)
[BUT False is better]
11.What storm surge did we study?
December 2013.
12.Why is the south east coast of the UK more vulnerable to storm surges?
- North sea.
- Funnel effect between UK and Europe.
13.What are 2 physical reasons why London is vulnerable to flooding?
- Storm surges.
- Narrowing of the land (funnel effect).
14.What are 2 human reasons why London is vulnerable to flooding
- Large population.
- Lots of buildings along the Thames.
15.What is isostatic recovery?
The weight of the ice acted like a sea-saw and pushed down Scotland and raised the South East.
Now that the weight of the ice has gone Scotland is rebounding and the South East sinking back down.
