Weathering & Erosion-3 Types and 6 Agents YouTube Lecture Handouts

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Weathering & Erosion - 3 Types and 6 Agents

Weathering & Erosion

  • Weathering is the process where rock is run, worn away or broken down into smaller and smaller pieces.
  • Once the rock has been weakened and broken up by weathering it is ready for erosion.

Biotic & Biochemical Weathering

Biological weathering is the weakening and consequent disintegration of rock by plants, animals and microbes.

It can work hand in hand with physical weathering by weakening rock or uncovering it to the forces of weathering of physical or chemical.

  • Plants
  • Bacteria
  • Animals
  • Anthropogenic

Physical Weathering

Physical Weathering - 1

Physical Weathering

Physical Weathering - 2

Chemical Weathering

  • Oxidation
  • Reduction
  • Carbonation
  • Cation Exchange
  • Chelation
  • Hydrolysis
  • Hydration
  • Dissolution


When rocks and sediments are picked up and moved to another place by ice, water, wind or gravity at that time erosion happened.

  • Water
  • Ice
  • Wave
  • Wind
  • Bio
  • Gravity