GCSE Rivers Glossary
Abrasion: the pebbles being transported wear away the bed and banks of the river channel.
Alluvium: rock particles (clay, silt, sand and gravel) deposited by a river.
Attrition: The particles are knocked about as they are transported, and they gradually become more rounded and reduced in size.
Base Level: the mouth of the river and the point where the gradient becomes zero. No further erosion is possible during normal river flow at this point.
Bedload: the material carried by a river by being bounced or rolled along its bed.
Catchment: see Drainage Basin.
Confluence: the point at which rivers meet.
Corrosion: see Solution.