Transportation

• Erosion


  Land is worn away by another material
• Hydraulic action


  Force of the water that hits the river bed and removes material
• Abrasion


  Sediment carried by the water hits the river channel and removes material in a sand paper effect
• Attrition


  Stones hit into eachother, making them smaller & smoother
• Solution


  Soluble materials dissolve in the water
• Water Cycle (Hydrologic Cycle)

  Evaporation

  Transpiration - sun heats up water from leaves

  Condensation

  Precipitation

  Surface runoff - when water runs off the surface of the ground

  Ground water flow - Water goes into the ground

  Drainage basin - the water drains there and flows back into river
• Traction


  Rocks or big boulders roll Along the river bed because they are too heavy to be picked up by the river
• Saltation


  When small pebbles bounce along the river bed because they are lighter than rocks they do not need to be rolled
• Suspension


  small particles such as silts and clays are suspended in the flow of the water. 
• Solution 


  when minerals in rocks like chalk and limestone are dissolved in sea water and then carried in solution. The load is not visible.