coasts: keywords

• beach nourishment

  adding sand to an eroding beach by humans; saves cliffs from recession
• coastline

  where the land meets the sea
• concordant coastline

  bands of alternate geology parallel to the coast
• constructive waves

  build up beaches; SWASH stronger than BACKWASH
• destructive waves

  removal of beach material; BACKWASH stronger
• discordant coastline

  bands alternate perpendicular to the shore

  
• discordant vs concordant

  A) discordant

  B) concordant

  C) headland

  D) bay

  E) bay

  F) headland

  
• corrasion

  mechanical erosion where material in the sea is FLUNG at the cliff face; as waves break against it until rock of cliff-face is broken
• fetch

  distance a wave has travelled before reaching land
• groyne

  hard engineering_ wooden walls perpendicular to seafront_ encourage trapping sediment to reduce erosion caused by LONGSHORE DRIFT or WINDS