Physical Weathering types, geog1

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  • Physical Weathering types
    • Freeze - Thaw
      • 1. water collects in cracks in rocks
      • 2. Water freezes to form ice. Expansion causes stresses & cracks are enlarged
      • 3. Fragment breaks off & collects as scree at the foot of the rockface
    • Exfoliation
      • 1. During day, expands
      • 2. At night cools & contracts
      • 3. Repeated cycle, leads to outer skin peeling with water, weakening the rock


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