Beaches
Give an example of a beach
Bournemouth Beach, Brighton Beach
Give an example of a spit
Spurn Point
Give an example of a tombolo
St Ninian's Isle
Give an example of a bar
Chesil Beach
What type of wave creates beaches?
Constructive Wave
What is a spit?
Narrow ridge of sediment that reach into the sea and are connected to the mainland
What is a tombolo?
A spit that connects an island to the mainland
What is a bar?
A ridge of sediment that cuts off a bay from the sea
What is a beach?
An area with a buildup of sand/shingle/pebbles
What can happen to a sand spit if there is a change in wind direction?
Develop a hook or a curve
How are tombolos formed?
Sediment builds up in the space between an island and the coastline
What is the name of the feature that forms behind a bar?
A lagoon
What role does a strong swash play in creating a beach?
It helps bring material from the sea further up onto the shore
How are spits created?
When longshore drift carries sediment across the coastline, a change in coastline direction or a loss of wave energy means it is deposited into the sea
What is the difference between a tombolo and a spit?
Spits do not connect to an island whereas a tombolo does
How are bars different to spits?
Bars reach all the way across the mouth of a bay whereas spits only partly extend into the mouth of the bay
Beaches need a more deposition than erosion to take place. Why does this happen?
Usually takes place in sheltered bays which face less strong waves and winds. Gentle slopes also make it easier for deposition to take place
What coastal feature can spits often be found near?
Mouth of an estuary
What is one of the main processes that help create a tombolo?
Wave refraction
How are bars formed?
When a spit continues to extend across the mouth of the bay as more sediment is added by longshore drift