Rivers

• 4 types of erosion

  • Hydraulic action: The force of the water breaking the river bed down
  • Abrasion: rocks hit against the river bed braking down the river- sandpaper effect
  • Attrition: the rocks hit against each other breaking down
  • solution: the rocks dissolved by the acidic water
• 4 types of transportation

  • Traction: Sediment is too large to be carried and so is rolled along the river bed
  • saltation: sediment is still large and so it is carried over short hops before being re-deposited
  • suspension: sediment is carried by the water
  • solution: sediment is fully dissolved by the water and carried
• All sediment is deposited, depending on its size depends on how far the river can carry it
• All water that reached the river arrives through the water cycle and its drainage basin
• Drainage basin: where water that falls in an area flows into the river