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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 What was the holderness coast originally made of?

  • soft rock
  • chalk
  • clay

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