Marine Erosion and Coastal Landforms: Key Concepts and Processes
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12 Terms
What is marine erosion?
The wearing away of the coastline by wave action.
Name the four types of marine erosion.
Hydraulic action, abrasion, attrition, solution.
What is hydraulic action?
It is the sheer force of waves and water crashing against a coast
What is abrasion?
When rocks carried by waves scrape and wear away the coast.
What is attrition?
When rocks collide and break into smaller, smoother pieces.
What is a beach?
A coastal landform made of sand, shingle, or pebbles between the high and low tide marks.
How is a beach formed?
By deposition when waves lose energy and drop material.
What are constructive waves?
Low waves with strong swash and weak backwash that build up beaches.
What are destructive waves?
High waves with weak swash and strong backwash that erode beaches.
What is longshore drift?
The movement of material along the coast by angled waves.
What is deposition?
When the sea drops material after losing energy.
Why are beaches important?
They protect coastlines and support tourism.
Note 
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