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coastal deposition
Question | Answer |
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What is a beach and where can it be found? | a beach i s a build up of loose material deposited by constructive waves between the low and high tide mark e.g kilkee Co.Clare and ballybunion Co.kerry |
How do constructive waves influence the formation of a beach ? | constructive waves deposit the beach sediments on the shore allowing the beach to form |
Explain the process of longshore drift in relation to the formation of a beach? | when the waves break at an angle to the beach, longshore drift occurs. sediments are dragged along the coastline in a zig zag motion before depositing |
what is a berm? | ridges of coarse gravel deposited parallel to the shore |
explain the term runnel | depressions that seperate berms |
In relation to beach features define a sand dune | hills of sand that form at the back of a beach |
How does marram grass influence a sand dune | marram is a coarse , strong grass that grows in sand . marram colonieses the dunes and binds the sand together with its long roots acting as an anchor |