Keywords

• Abrasion: The pebbles being transported wear away the bed and banks of the river channel
• Attrition: The particles are knocked about as they are transported, and they gradually become more rounded and reduced in size
• Groynes: A series of rock armour built along the coast to prevent erosion
• Swash: The movement of water up the beach
• Backwash: Water moving back down the beach
• Longshore drift: Sediments move parallel to the shoreline due to wave action
• Saltation: When sediment is moved by waves or currents but only moves short distances above the sea floor
• Constructive wave: A wave that builds up energy as it moves along the coastline.
• Destructive wave: A wave that breaks into smaller pieces and carries away material.