Coasts

• Formation of a sand spit?


  -coastline changing direction

  -longshore drift

  -sheltered area

  -deposited sand above sea level
• Formation of a Bay


  -Erosion

  -alternating bands

  -sand stone and clay

  -right angles
• Formation of a stack?


  Waves=weak headland

  hydraulic action, corrosion, corrasion,

  continuous erosions

  free standing rock separate to headland
• Formation of a sand bar?


  narrow ridges of sand that connects 2 headlands

  longshore drift

  swash carries material

  same angle as prevailing winds
• Formation of a spit?


  Deposited sand builds up

  Long narrow ridge

  swash carries material at an angle

  returns sediment at right angles
• Formation of a cliff and wave-cut platform


  waves break against the front of the cliff

  higher tides makes destructive waves which are powerful

  waves erode the coastline through hydraulic action, abrasion and solution

  abrasion is where pieces of rock are hurled at the coastline breaking it down