Weathering

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  • Created by: Anya
  • Created on: 08-05-14 17:38
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  • Weathering
    • Mechanical
      • Breakdown of rocks without changing its chemical composition
      • Water gets into rocks that have cracks
        • Water freezes and expands, puts pressure on the rock
          • Water thaws and releases pressure
            • Repeated freezing and thawing widens crack
    • Chemical
      • Changes rocks chemical composition
      • Carbon dioxide in rainwater makes it a weak carbonic acid
        • Acid reacts with rock that contains calcium carbonate

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