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  • River processes
    • Water Cycle
      • Inputs
        • Precipitation
          • Water vapour condenses into rain, hail, sleet, snow or drizzle
      • Outputs
        • River discharge
      • Storage
        • Interception
          • Water caught by vegetation in the atmosphere
        • Soil moisture
          • Water stored in the soil
        • Ground water
          • Water stored in porous rocks deep underground
        • Surface storage
          • Water flowing to lakes or oceans
      • Transfers
        • Surface run off
          • Water moves across the surface of the earth as a stream, tributary or lake
        • Through-flow
          • Water moves downhill through the soil
        • Infiltration
          • Water soaks (filters) into the ground
        • Percolation
          • Water moves from the soil to the rocks deep underground
        • Ground water flow
          • Water moves slowly through the soil and rocks and back into the sea
        • Stem flow
          • Water flowing down stems of plants and trunks of trees
        • Condensation
          • Water changing from gas to liquid
        • Evaporation
          • Water transformed from sea water into water vapour in the atmosphere
    • Long profile
      • Discharge
        • How much water passes a particular point at a particular time
      • Width
        • How narrow or wide a river is
      • Depth
        • How shallow or deep the river is
      • Velocity
        • The speed of the river
      • Load
        • Amount of material that a river is carrying. Faster the velocity the more load
      • Gradient
        • Steepness of the slope
    • Erosion processes
      • Solution
        • Weak  acid chemicals in the water react with the rock and dissolves soluble minerals
      • Hydraulic action
        • Sheer force of water pounding into a crack and causing the air to move in deeper, creating a bigger crack and dropping materials
      • Attrition
        • The rocks knock against each other and wear eachother down
      • Abrasion
        • Force of moving water in the river throws rocks its carrying dislodging more material and also run them together making them smaller and smoothe
      • Wearing away of rock and soil in a river bed and bank
    • Transportationprocesses
      • Rivers pick up and carry material as they flow.
      • Solution
        • Minerals are dissolved in the water and carried along in solution
      • Saltation
        • Small pebbles and stones are bounced along the river bed.
      • Traction
        • Large boulders and rocks roll along the river bed
      • Suspension
        • Materials  carried along in the water and held up in the flow of the river
    • Deposition
      • When material is dropped by a river heaviest first
      • Drops the heaviest first as the river doesn't have enough energy or the river is slowing down.
    • The drainage basin
      • Mouth
        • The place where the river flows into the sea
      • River channel
        • The main body of water, flowing down hill
      • Water shed
        • High land or boundary separating one drainage basin from another
      • Confluence
        • The point where two rivers mee
      • Tributary
        • A small river  or stream that joins a bigger river
      • Source
        • Starting point of a river usually at the  top of a hil
      • Drainage Basin - area of land drained by a river and its tributaries

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