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Question

how can the energy of waves traveling through water affect a shoreline?
Imagine that there is a large bouldozer on teh edge of a shoreline. If the wave period is 15s long,how many times is the boulder hit in a year? PLEASE SHOW UR WORK
how can severe storms over the ocean affect shoreline erosion and depostion?
how could a headland change in 250 years? describe some of the featurs that may from!!!

Answer 1

The main cause of coastal erosion is the kinetic energy of wind.The main medium of transmission of wind energy is through wind generated water waves.
Occasionally, waves are generated by other forms of energies such as earth quakes(at sea beds).The waves in turn cause erosion upon breaking the shoreline or by way of induced currents.In coasts where substantial tidal variation occurs(as in Mumbai in India) there may be marginal erosion.
While erosion of loose materials like sand is visible clearly, it is not so with hard materials like rock.The coastline will be stable where the water is still and calm,as in a lagoon.