Coastal Erosion Flashcards
1
Q
Long shore drift?
A
The wind and sea work together to move material along the coastline.
2
Q
Split?
A
A beach that extends into the sea.
3
Q
What are the seven coastal protections?
A
. Groynes . Rock armour . Sea wall . Beach nourishment/replenishment . Offshore breakwater/reef . Revetments . Stone Gabions
4
Q
In your opinion what is the most effective coastal protection?
A
Groynes
5
Q
Mohs hardness rating: Clay, marble, granite, chalk.
A
Granite=7
Clay=5
Marble=3-5
Chalk=3
6
Q
What are the four ways cliffs can be eroded?
A
. Hydraulic action
. Abrasion
. Attrition
. Corrosion
7
Q
Hydraulic action?
A
The water hits the cliff causing air to be squeezed into the cracks causing small parts of the rock to break of.
8
Q
Abrasion?
A
Bits of rocks crash into the cliff.
9
Q
Attrition?
A
Rocks hitting other rocks and turning into smaller rocks.
10
Q
Corrosion?
A
The sea dissolves the minerals in the rock.
