definitions

• what is hydraulic action in rivers?

  the force of the river water colliding with rocks breaks rock particles away from the river channel
• what is abrasion in rivers?

  eroded rocks picked up but the river scrape and rub against the channel, carrying it away
• what is attrition in rivers?

  eroded rocks picked up by the river, crash into each other and break into smaller fragments
• what is solution in rivers?

  river water dissolves some types of rocks eg. chalk
• what is traction in rivers?

  large particles like boulders are pushed along the river bed by the force of the water
• what is suspension in rivers?

  small particles are carried along by the water
• what is saltation in rivers?

  pebble-sized particles are bounced along the river bed by the force of the water
• what is solution in rivers?

  soluble materials dissolve in the water and are carried along
• what is deposition in rivers?

  where the river drops the material its transporting
• what is transportation?

  the movement of eroded material