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6. In Kilnsea what coastal protection was used? How long will this last?
- managed retreat- flood low lying land, 20-30 years
- sea wall
- groynes
- marsh creation
7. What is the sub aerial process that erodes the holderness coast?
- mud flow
- rotational slip
- landslide
8. What was the holderness coast originally made of?
9. How much land does Ringborough farm lose each year? How much does this cost?
- 1-2 metres, £5000-£5500 a year per acre lost
- 3 metres
- 1 km
10. What do the waves mainly erode the holderness coast by?
- hydraulic action and abrasion
- attrition
- weathering
- solution
11. How much do East Riding council spend each year on coastal defences?
- £200,000 a week
- £200,000 per year
- £2 million
12. Why was it economically worthwhile to put sea defences in Mappleton?
- the main road is close to the sea so needs protecting
- they were cheap
13. What is one of the fastest eroding coast lines in europe?
- welsh coast
- the holderness coast
- north
- south west
14. For how long do the sea defences in Mappleton guarantee the erosion to be minimal?
- 25 years
- 50 years
- 50 days