Distinctive Landscapes CS- UK coastal landscape Flashcards
1
Q
UK coastal landscape case study
A
swanage (jurassic coast of dorset)
2
Q
what landforms can be found at Old Harry’s rocks?
A
caves, arches, stacks and stumps
3
Q
what lanform can be found at lulworth?
A
cove
4
Q
how is a cove formed?
A
a layer of softer rock parallel to the coast is eroded outwards as it is easier to erode than the harder rock at the narrow opening
5
Q
what is a cove?
A
a horse shoe shaped opening in the coast wich is narrow at its mouth but wider at its back
6
Q
what are groynes and how do they work?
A
- wood or stone barriers across the beach
- prevent the natural process of longshore drift
7
Q
evaluate the effectiveness of groynes
A
- maintaining the beach helps to protect the coast behind
- effective
- lasts
- may cause problems along the coast due to sediment starvation
- expensive
- unattractive
8
Q
how do sea walls work?
A
they protect the cliffs behind from the waves by absorbing and deflecting their energy which prevents the natural process of erosion
9
Q
how does rip rap work?
A
- a barrier of concrete blocks or hard rocks like granite protect the coast behind by absorbing wave energy which prevents the natural process of erosion
10
Q
evaluate effectiveness of rip rap
A
- looks natural
- increases habitats
- cheaper in short term
- hard to maintain
- more expensive in long run
