Coastal Defences

Coastal Defences quiz, including advantages, disadvantages and definitions of each method.

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What is a Recurved sea wall?
A concrete wall which is curved on the underside to deflect the power of waves.
1 of 9
Name two advantages of Recurved Sea Walls
Very effective, reflect rather than absorb wave energy.
2 of 9
Name a disadvantage of Recurved Sea Walls
Can be eroded by waves and undermined.
3 of 9
What is Rock armour?
Large boulders on the beach which absorb wave energy and break up the power of waves.
4 of 9
Name an Advantage of Rock Armour
Inexpensive
5 of 9
Name Two Disadvantages of Rock Armour
Can be undermined and are ugly
6 of 9
What are Groynes?
Structures designed to top longshore drift by, building up and anchoring beach material to protect cliffs.
7 of 9
Name an advantages of Groynes
Very Effective
8 of 9
Name a disadvantage of Groynes
May starve other areas of sand causing longshore drift in other places.
9 of 9

Other cards in this set

Card 2

Front

Name two advantages of Recurved Sea Walls

Back

Very effective, reflect rather than absorb wave energy.

Card 3

Front

Name a disadvantage of Recurved Sea Walls

Back

Preview of the front of card 3

Card 4

Front

What is Rock armour?

Back

Preview of the front of card 4

Card 5

Front

Name an Advantage of Rock Armour

Back

Preview of the front of card 5
View more cards

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