Clay + shale are types of rock that are easily eroded.
Limestone is easily eroded.
Destructive waves are low in energy.
When rocks are parallel to the coastline, the coastline is concordant.
When the rocks are at right angles to the coast, the coastline is known as discordant.
Beach replenishment/nourishment is an example of a hard-engineering technique used to manage coastal erosion.
Sea walls are inexpensive as they are cheap to build.
Soft-engineering techniques tend to be expensive, short-term options.
Strong prevailing winds are needed for the process of longshore drift.
Groynes, gabions and revetments are examples of hard-engineering techniques.
