Coastal processes

• Freeze-thaw weathering is where water collects in cracks in rock, freezing and expanding the cracks, this process occurs over and over until parts of the rock begin to break off
• chemical weathering wears away certain rocks, for example when the rain is more acidic than usual
• mass movement is the downhill movement of rock, soil or mud under the influence of gravity
• the stronger the angle of the slope, the faster the mass movement
• a lot of rainfall will lubricate the cliff, leading to mud flows
• a rock slide is where a large amount of rock slkides down a cliff
• attrition is when material by the waves bump into each other and so are broken down into smaller pieces and made smoother and rounder
• hydraulic action is the force of the waves against the coast
• corrosion is the chemical action of the salty water of sea water slowly dissolving the coasts rocks
• abrasion is where material carries by the waves is used to wear down the coast
• traction is boulders and pebbles rolled along the sea bed
• saltation is sand sized particles bouncing or hopping along the sea bed
• suspension is fine clay and sand particles carries by the water
• solution is some materials dissolved in water. this requires little energy
• material is deposited when the waves run out of energy to transport marterial