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3 Weathering And Erosion
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3 Weathering And Erosion

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  • 1. Weathering Key process that shapes the landscape
  • 2. What is Weathering?
    • Weathering is the break down of rock in-situ.
    • There are 4 main types of weathering; freeze-thaw, onion-skin, biological and chemical weathering.
  • 3. Freeze Thaw Weathering
  • 4. Freeze Thaw
  • 5. Onion Skin Weathering
  • 6. Exfoliation or Onion Weathering
  • 7. Biological Weathering
  • 8. Plant Roots
  • 9. Chemical Weathering
  • 10. Water
    • Water weathers rock by dissolving it
  • 11. Weathered Environments Weathering contributes significantly to the formation of many different environments including coasts, but other processes are also significant.
  • 12. Erosion, Transportation and Deposition
    • Weathering breaks up and weakens rock, erosion wears away and removes the loosened material.
    • Rivers, ice, the sea and the wind are all significant causes of erosion.
    • Erosion does not operate on its own, erosion wears the land away, transportation removes the eroded material and deposition build new landforms.
  • 13.