Headland and Bay

• Hydraulic action is when the sheer force of water forces air into cracks causing the rocks to be dislodged 
• Abrasion is when the rocks, sand and shingle are thrown against cliffs break/scrape rocks off.
• Solution is when salts and acids in the water dissolve minerals in the rock.
• Attrition is when waves cause rocks to hit off each other and break into smaller pieces
• Headlands and bays are formed due to differential erosion where softer, less resistant rock is eroded away faster than harder, more resistant rock
• A headland is an area of hard rock that sticks out into the sea and a bay is a sheltered area of rock between headlands 
• Often form in areas of discordant coastline with alternating bands of rock are found at right angles to the coast
• Constructive waves built a small beach in the bay between the headlands