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Landform Formation by Erosion

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Landform Formation by Erosion. Water Cycle = Hydrological Cycle. A series of events where water is stored and/or transferred. Water Storage. Water is stored in lakes, rivers, clouds, snow, and glaciers. Methods of Transfer.

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Presentation Transcript
water cycle hydrological cycle
Water Cycle = Hydrological Cycle
  • A series of events where water is stored and/or transferred.
water storage
Water Storage
  • Water is stored in lakes, rivers, clouds, snow, and glaciers.
methods of transfer
Methods of Transfer
  • Precipitation (rain), rain runoff, condensation, sublimation, evaporation, transpiration, and snowmelt.
  • Weathering is the slow breakdown of rock through chemical, biological and physical processes
  • The breakdown of rock by wind, gravity, water, and ice


  • AKA – Aeolian or alluvial Erosion
  • Causes sand dunes and alluvial fans


  • Mass movement of sediment.
  • Ex. Landslides, mudslides, avalanches
water erosion
Water Erosion
  • Splash Erosion – caused by raindrops
  • Sheet Erosion – caused by flat sheets of rain pouring off
  • Rill Erosion – caused by small narrow areas where rain gathers and drains.
  • Gully Erosion – water then erodes away larger gullies.
lateral erosion
Lateral Erosion
  • Erodes the sediments on the sides of streams.
  • Meanders are the S shaped bends in a river formed when a river flows over a flat plain.
  • Rivers deposit sediment on the inside of curves and erode banks on the outside.

Vertical Erosion

  • The downward cutting into bedrock by a stream forming valleys (hilly) and gorges (mountainous).
oxbow lakes
Oxbow Lakes
  • Sickle shaped lakes that form from meanders.
  • A meander is cutoff from the river leaving an oxbow lake.
river delta
River Delta
  • River deltas are formed by constant deposition of sediment being deposited in the ocean or large lakes in a fan shape.
shoreline erosion
Shoreline Erosion
  • Caused by the pounding of surf and tidal movements.
  • Creates crescent shaped beaches.
human effects
Human Effects
  • Any process that removes vegetation (ranching and some construction) increases erosion.
  • Topsoil removal for farming also increases erosion.
erosion in alaska
Erosion in Alaska
  • Matanuska River
  • Revegitation and Erosion Control
  • Shishmaref Village (video)