Water

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  • Water
    • Erosion
      • Hydraulic action: the sheer force of flowing water wshes away any loose materials on the bed and banks
      • Abrasion/ Corrasion: stones carried in the river bed and banks, wearing them away. Sometimes stones get trapped in a dip, where they swirl around and create potholes.
      • Solution/ Corrosion: the slightly acidic river water dissolves rocks made of calcium carbonate (CaCO3)
      • Attrition: stones collide together and are broken down becoming smaller and rounder.
    • Transport
      • Traction: stones rolled along the river bed by the force of flowing water.
      • Saltation: small stones are bonced along the river bed by flowing water.
      • Suspension: Particles of silt
      • Solution: some minerals dissolve in water. Limestone, for example, slowly dissolves.

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