Holderness

Question 1

Costal retreat is occurring and cause of erosion was ….

Answer 1

Destructive waves causes not only hydraulic action as well as abrasion, attrition and weathering

Question 2

Impacts of costal erosion :

Answer 2

Land lost to sea
Houses in danger of subsidence or destruction
Less land for farming

Question 3

Conflicts :

Answer 3

Different approaches and not everyone agrees

Question 4

Examples of hard engineering :

Answer 4

Groynes
Rock armour
Sea wall
Sea mattress/ off shore reef

Question 5

Advantages of sea wall

Answer 5

Protects cliffs and buildings - reflects wave energy back out to sea.
Protects land behind.

Can attract tourists as a promenade for fares and fates.

Question 6

Advantages of groynes

Answer 6

Prevents sea removing sand

Stopping long shore drift by making sediment build up.

Question 7

Disadvantage of groynes

Answer 7

Exposes other areas of coastline

Question 8

Advantages of Rock armour

Answer 8

Absorbs wave energy

Slows the speed of waves

Causes the wave’s energy to dissipate

Question 9

Disadvantages of rock armour

Answer 9

They are expensive

Question 10

Advantages of offshore reef/ sea mattress

Answer 10

Waves break on reef and loose their power before they hit the beach making them less destructive

Question 11

Disadvantages of offshore reef/ sea mattress

Answer 11

Expensive and may interfere with fishing and movement of animals

Question 12

Examples of soft engineering :

Answer 12

Managed retreat
Beach replenishment
Cliff regrading

Question 13

Advantages of beach replenishment :

Answer 13

Sand reduces wave energy and maintains tourism as it does not act as visual pollution.

Question 14

Disadvantage of beach replenishment :

Answer 14

Expensive for long term use and ultimately the problem is still occurring and has not been stopped

Question 15

Advantage of managed retreat :

Answer 15

People and activities avoid erosion by moving inland.

Nothing serves as visual pollution

Question 16

Disadvantage of managed retreat :

Answer 16

It is expensive

Question 17

What is cliff regrading ?

Answer 17

Making the cliff face longer and less steep to avoid slumping and instability.

Question 18

Advantages of cliff regrading :

Answer 18

Reduces slippage

Question 19

Disadvantage of cliff regrading :

Answer 19

Foot of the cliff still needs protection from the waves