Coast Keywords

?
Physical Weathering
caused by changes in temperature. In hot weather, rock expands and it contracts in cold weather, causing the rocks to crack. This causes parts of cliffs to fall off.
1 of 13
Chemical Weathering
Mildly acidic rain dissolves chemicals in the rock.
2 of 13
Corrasion
Waves pick up rocks and pebbles and throw them against the base of the cliff, wearing it away.
3 of 13
Corrosion
Some types of rock and pebbles react with seawater which dissolves the rock.
4 of 13
Hydraulic Action
Air is forced into cracks by waves which widens the cracks. This is repeated over time.
5 of 13
Attrition
Rocks bang against each other by waves, making them smooth.
6 of 13
Long Shore Drift
Sand and shingle is moved up the beach in this direction.
7 of 13
Swash
Rocks move up the beach in swash (the direction of the preaviling winds)
8 of 13
Backwash
Rocks move down the beach in a straight line because of gravity.
9 of 13
Hard Engineering
Putting in place concrete and steel to try and stop all erosion.
10 of 13
Soft Engineering
This is using natural processes to try and slow down erosion. It is cheaper but doesn't work as well or last very long, e.g beach nourishment.
11 of 13
Rip Rap/ Rock Armour
This is not too expensive and lasts for 30-50 years. They are rocks placed along the beach.
12 of 13
Gabions
This is a cheap method that doesn't last that long. The waves use up all their energy eroding the rocks and the wire frame is needed to hold the rock together.
13 of 13

Other cards in this set

Card 2

Front

Chemical Weathering

Back

Mildly acidic rain dissolves chemicals in the rock.

Card 3

Front

Corrasion

Back

Preview of the front of card 3

Card 4

Front

Corrosion

Back

Preview of the front of card 4

Card 5

Front

Hydraulic Action

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Geography resources:

See all Geography resources »See all Coastal environments resources »