Geography

• A sea cliff is a vertical slope on the coastline which is formed due to marine erosion
• Cliffs of moher co. Clare
• The processes of marine erosion combine to form a sea cliff. Hydraulic action is the sheer force of the moving water
• As destructive waves hit off the coastline the rock is weakened causing cracks in the rock
• Compression increases the size of the cracks and joints, as the wave retreats the air in the crack escapss
• This constant compression and release of air is called cavitation.
• This wave action is concentrated in an area between high and low tide and eventually this area is eroded and a overhang develops
• As it's eroded it eventually collapsed forming a steep cliff face.