Air trapped by the waves causes the rock to shatter
what is hydraulic action
the force of the water bashing against
what is attrition
Is when rocks and stones hit and rub off eachother and create sand and pebbles
what is abrasion
Is when rocks and stones carried by the sea crash against the coast
what is a sea cliff
sea cliffs are formed by hydraulic action. As the waves pound against the coast a cut is formed.As the cut gets the overhanging rock becomes unstable and collapses to form a cliff
E.g
The Cliffs of Moher,Co.Clare
what is a bay
a bay is a wide curved opening into the coast. It is formed where areas of hard rock and soft rock lie side by side.The soft rock erodes faster to form a bay shape.Sandy beaches are often found on the inside of bays.
E.G
Donegal bay
what is a head land
A headland is formed in the same way as a bay only that it is hard, resistant rock that is left behind that makes up a headland . Its a piece of land that juts further out into the sea than the land around is a headland
what is a sea cave
Its a long tunnel shape on a sea cliff. It gets lower and narrower the further into the cave it goes. Waves find a weak spot at the base of the cliff and gradually erodes it until a cave is formed