Coastal Defences

Question 1

What is hard engineering?

Answer 1

Were man made structures are used to manage the coastline

Question 2

What is soft engineering?

Answer 2

Working with natural resources to sustainably protect the coastline

Question 3

Name all the types of coastal defences

Answer 3

Sea wall, groynes, rock armour, beach nourishment, dune regeneration and marsh creation

Question 4

Is a sea wall hard or soft engineering?

Answer 4

Hard

Question 5

Is groynes hard or soft engineering?

Answer 5

Hard

Question 6

Is rock armour hard or soft engineering?

Answer 6

Hard

Question 7

Is beach nourishment hard or soft engineering?

Answer 7

Soft

Question 8

Is dune regeneration hard or soft engineering?

Answer 8

Soft

Question 9

Is marsh creation hard or soft engineering?

Answer 9

Soft

Question 10

What is a sea wall?

Answer 10

Concrete rock barrier to reflect waves back into the sea

Question 11

What are groynes?

Answer 11

Timber or rock structures that trap sediment moved by longshore drift

Question 12

What is rock armour

Answer 12

Piles of boulders dumped at the foot of the cliff to absorb wave energy

Question 13

What is beach nourishment?

Answer 13

Adding sand from local areas to a beach to make it larger

Question 14

What is dune regeneration?

Answer 14

Where marram grass is planted to stabilise dunes and help them develop as they are good buffers to the sea

Question 15

Give the advantages and disadvantages of sea walls

Answer 15

Adv. effective and have a walkway

Dis adv. cost up to £10 million per km and can block sea views

Question 16

Give the advantages and disadvantages of groynes

Answer 16

Adv. make the beach bigger-attracts tourists and cost £5000 per meter and are not too expensive
Dis adv. prevent sediment reaching other beaches causing more erosion elsewhere

Question 17

Give the advantages and disadvantages of rock armour

Answer 17

Adv. easy to maintain, can provide use for fishing and costs £1000-£4000 per meter making it quite cheap
Dis adv. can be expensive to transport and can block views

Question 18

Give the advantages and disadvantages of beach nourishment

Answer 18

Adv. quite cheap costing £3000 per meter and makes a bigger beach attracting tourists
Dis adv. needs constant maintenance

Question 19

Give the advantages and disadvantages of dune regeneration

Answer 19

Adv. keeps the natural environment

Dis adv. can be damaged by storms, grass takes time to be planted and can cost anywhere between £2000-£100 million

Question 20

Give the advantages and disadvantages of marsh creation

Answer 20

Adv. a bit cheap as arable land costs around £5000-£10000 and creates habitat for wildlife
Dis adv. land is lost and homeowners need to be payed for this