The Sea: How it shapes our coastlines

• What is the fetch?


  The distance of open sea over which the wind blows over. Waves with a greater fetch are stronger.
• What are constructive waves?

  Waves that have a greater swash than a backwash. It deposits material.
• What are Destructive waves?


  Waves that have a greater swash than backwash. The waves erode material
• What are the different processes of coastal erosion?


  hydraulic action, abrasion, compression, solution and attrition
• What are the different erosion land-forms at the cliffs?


  Sea cave, sea arches, sea stack and stump, blowholes
• What are prevailing winds?


  They are the most common winds that blow over an area.
• What is the grass called that keeps sand from blowing away at the beach?


  Marram grass
• What are the positives of sea's?

  Fishing, transport, jobs
• What are the negatives of sea's?


  Over fishing, pollution
• What are the different coastal protection?


  Sea walls, rock armour, groynes and gabions