Air becomes trapped in joints and cracks in the cliff face. When a wave breaks, the trapped air is compressed, which weakens the cliff, and causes erosion
Abrasion
Bits of rock and sand in waves are flung against the cliff face. Overtime, they grind down the cliff surfaces like sandpaper.
Attrition
Waves smashed the rocks and pebbles on the shore into each other, and they break becoming smaller and smoother
Corrasion
Weak acids contained in seawater will dissolve some types of rock, such as chalk or limestone
Solution
Minerals are dissolved in water
Suspension
Small particles are carried in the water, for example, silts, and clays
Saltation
Rocks are bounced along the seabed
Traction
Pebbles and largest sediment are rolled along the seabed
