Flashcards
Coast Terminology
Cards in this deck (28)
- 1Constructive WavesLow waves that surge up the beach, carrying beach material and depositing in, building up the beach. They are formed by storms far out at sea.
- 2Destructive wavesHigh and deep waves, formed by local storms, remove beach material.
- 3Hydraulic actionthe force of waves compressing air into cracks
- 4Corrasion (aka Abrasion)large waves hurl beach material at the cliff
- 5Corrosion (aka Solution)Salts and acids dissolve the cliff
- 6AttritionRocks bump into other rocks and break down into smaller pieces (caused by waves)
- 7Tractionthe movement of large rocks along the sea bed
- 8Saltationthe 'hopping' of pebbles along the sea bed
- 9Suspensionsmall pebbles carried in the water
- 10Swashthe movement of waves up the beach
- 11Backwashthe movement of waves down the beach
- 12Depostionthe act of putting down material somewhere else
- 13Erosiona moving force causing the wearing away of material
- 14Transportationthe moving of materials
- 15Longshore driftthe movement of sand and rocks along the coast
- 16Cliffa steep rock face seen at the coast
- 17Managed retreatthe intentional termination of preventative strategies (or end of maintenance), often due to economic reasons
- 18Hard engineeringhuman made strategies that control coastal processes
(groynes, gabion cages) - 19Soft engineeringmethods that work with environment to prevent coastal processes
(beach replenishment, planting vegetation) - 20Cost benefit analysisworking out if it makes financial sense to build to protect.
The predicted benefit must be 5x as much as the cost to build. - 21Sea walla concave wall to deflect and reduce the power of waves and prevent coastal erosion.
- 22Groyneswooden structure protruding into the sea to build up the beach and reduce the effects of longshore drift.
- 23Rock armourlarge boulders at the base of the cliff to slow coastal erosion
- 24Offshore breakwaterpeninsulas of land to reduce wave power
- 25Gabion cagescages of rock to support cliffs and provide drainage and reduce effects of coastal erosion
- 26Revetmentswooden structures at a 45 degree angle that reduce wave power and build up the beach
- 27Beach replenishmentthe addition of beach material to build up the beach
- 28Weatheringthe general erosion of the coast
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- AQA GCSE Geography Coasts Terminology. Includes: - Coastal processes - Types of erosiom - Prevention and coastal management
- Created by
- Elora Graham
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