weathering and erosion

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  • Created by: michelle
  • Created on: 18-05-13 11:01
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  • weathering and erosion
    • STUMP
      • a pillar (small one) after a stack has collapsed
    • PHYSICAL WEATHERING
      • water enters carcks in rocks, temperature drops and the water freezes
        • as it freezes it expands and puts pressure on the rock (breaks off rock)
    • CHEMICAL WEATHERING
      • the decay of rocks caused by a chemical change within
        • acidic rain-carbonic acid
    • BIOLOGICAL WEATHERING
      • caused by the action of animals and plant roots dislodge the rock
    • ABRASION
      • debris is hurled against the coast line
    • CAVE
      • a weakplace in the rock face where hydraulic action has eroded the rock over time making it deeper and wider
    • ARCH
      • the weak point in the rock face where 2 caves have become an arch
    • STACK
      • a pillar of rock formed when an arch collapses (big one)

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