geography 5.0 / 5 based on 1 rating ? GeographyWater and riversGCSEWJEC Created by: Lewys ThomsonCreated on: 16-05-16 09:29 What are the two types of waves? Constructive or Destructive. 1 of 9 What are the 3 main things that influence the size and power of a wave? how long the wind has been blowing, the strength of the wind, the distance the wave has travelled (the fetch). 2 of 9 Can you name 2 properties of a constructive wave? A strong swash, a weak backwash. 3 of 9 Can you name 2 properties of a Destructive wave? Strong backwash, weak swash 4 of 9 What are the 4 main types of coastal erosion? Hydraulic action, Abrasion, attrition, solution. 5 of 9 Can you name 2 factors that influence coastal deposition? there is a good supply of material, when waves enter a sheltered area e.g a bay, when there is little wind. 6 of 9 Can you name 3 hard engineering techniques to protect a coast? Sea wall, groynes, rip rap/rock armour. 7 of 9 What has to be done before defending any coast? a cost - benefit analysis, if the cost to repair is greater than benefit then the town will be abandoned. 8 of 9 Can you name 1 landform that is created by coastal deposition? A spit, caused by the build up of material deposited by a longshore drift. 9 of 9
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