Geography As Rivers Topic

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  • Created by: Sam
  • Created on: 02-05-13 19:34
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  • Geography Rivers
    • Erosion
      • Hydraulic Action
        • Force of Water
      • Abrasion
        • Rocks Scrape Along Bed
      • Corrosion
        • Rocks Dissolved in Water
      • Attrition
        • Eroded Rocks Smash into Each Other
    • Transportation
      • Solution
        • Soluble Particles Dissolve in Water
      • Traction
        • Large Particles are Pushed Along Bed
      • Saltation
        • Small Particles Bounce Along Bed
      • Suspension
        • Small Particles Carried by Water
    • Meanders
      • Formed By Erosion + Deposition
      • Formed in Middle Course
      • Outtside Bend Eroded
      • Inside Bend Deposition
      • Ox-Bow Lakes
        • River Breaks Through Land on Bend
        • River Flows the Shortest Course
        • Deposition Cuts off Meander
      • Sinuous Bend in River
    • Waterfalls
      • River Erodes Soft Rock
      • A Platform is Created over the Soft Rock
      • This Platform Turns into a Steep Drop
      • Hard Rock is Undercut By Erosion
      • Vertical Erosion Causes a Plungfe Pool
    • Floodplains
      • Lower Course of River
      • Accumulation of River Deposits
      • River Covers the Floodplain in Times of Flood
      • Meanders Migrate Making it WIder
    • Levees
      • Natural Embankments on Either Side of River
      • Lower Course of River
      • During Flood, Eroded Material, Deposited Over Floodplain
      • Deposited Material Builds Up, Creating Levees
    • Deltas
      • Mouth of River
      • Deposition When Flocculation Occurs
      • Rate of Deposition Exceeds Rate of Sediment Removal
    • Knick Points
      • Sudden Break in Gradient
      • Rejuventation
      • Marked by Rapids
      • River Terraces
        • Flat Ground Runs Parallel the river
        • Above Current Level of Floodplain
        • Created Following a Fall in Base Level
    • River Terraces
      • Flat Ground Runs Parallel the river
      • Above Current Level of Floodplain
      • Created Following a Fall in Base Level
    • Incised Meanders
      • Rejuvenation
      • Meander Cut Deeply into Floodplain
      • Creates Steep Banks called Bluffs
      • Knick Points
        • Sudden Break in Gradient
        • Rejuventation
        • Marked by Rapids
    • Potholes
      • Cylindrical Holes Drilled into Bed
      • Erosional
      • Sediment grinds the hole (Corrasion)
      • Attrition Smooths Rock in the Hole
    • Braided Channels
      • River Forced to Split to Separate Channels
      • Variable Discharges
      • Erosional
      • River is Choked by Sandbars
      • River is Wide compared to Depth

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