Post on 04-Jan-2016
transcript
COASTLINES COASTLINES SHORELINESSHORELINES
How coasts are formed andHow coasts are formed and
the features found on coaststhe features found on coasts
TermsTerms Surf Zone = Area where the waves breakSurf Zone = Area where the waves break
Berm = An accumulation of material from Berm = An accumulation of material from waves near the shore which looks like small waves near the shore which looks like small dunesdunes
Longshore current = Flow of water that forms Longshore current = Flow of water that forms parallel to the shore as a result of surf wavesparallel to the shore as a result of surf waves
TermsTerms Bulkhead = Manmade protection against Bulkhead = Manmade protection against
waves for a building or lighthousewaves for a building or lighthouse
Jetty = A manmade barrier to protect the Jetty = A manmade barrier to protect the shoreline from wave action of passing boatsshoreline from wave action of passing boats
Delta = A triangular area with sediment Delta = A triangular area with sediment deposits from a river flowing to the seadeposits from a river flowing to the sea
TermsTerms Sandbar = A submerged sand dune Sandbar = A submerged sand dune
sometimes exposed at low tide.sometimes exposed at low tide.
Barrier Island = An island offshore that Barrier Island = An island offshore that protects the main land during storms.protects the main land during storms.
Rip Current = A current which is formed Rip Current = A current which is formed when a depression is created from the shore when a depression is created from the shore to the sea. Water is forced from the shore to to the sea. Water is forced from the shore to the sea making this dangerousthe sea making this dangerous..
TermsTerms Spit = A piece of shoreline moved by a Spit = A piece of shoreline moved by a
storm into the shape of a peninsula.storm into the shape of a peninsula.
Hook = A piece of shoreline moved by a Hook = A piece of shoreline moved by a storm into the shape of a curved peninsulastorm into the shape of a curved peninsula
Dunes = A naturally formed accumulation Dunes = A naturally formed accumulation of sand in hill shapes which change with of sand in hill shapes which change with wind movement.wind movement.