Geography- Coasts.

Geography revision cards for coasts.

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What is Attrition?

Particles carried by the waves crash against each other and are broken up into smaller particles.

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What is Abrasion (Corrasion)?

Particles carried by the waves crash against the cliffs, eroding the cliffs.

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What is Corrosion?

  • Salt in the seawater slowly dissolves the cliffs.
  • The material produced is carried away by the process of solution.
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What is Hydraulic Action?

  • The water traps air in cracks and caves in the rock.
  • This air is compressed by the incoming waves placing great pressure on the rocks, causing them to crack eventually.
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What are the Sub - Aerial processes?

  • The impact of rainwater, wind and frost on the cliffs.
  • Rainwater can cause surface erosion.
  • Frost shattering can occur in colder climates.
  • Rainwater can also increase the chances of mass movement occurring.
  • Wind erosion can aid in the erosion of the cliffs.
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Name the coastal processes.

Processes of coastal erosion include attrition, corrasion, corrosion, hydraulic action and sub-aerial processes.

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When does coastal deposition occur?

Coastal deposition occurs when the waves loose energy.

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Name a process of coastal transportation.

Longshore dirft.

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