1 of 9

Introduction to Weathering

2 of 9

Weathering and Erosion

  • Weathering = change the appearance of something through long exposure of air/water/nature
  • Erosion = removing pieces of rocks and transporting them to another by wind and water.

3 of 9

Types of Weathering

  • Physical

  • Biological

  • Chemical

4 of 9

Physical Weathering

  • The breaking of rocks by:
    • wind or rain
    • contraction
    • water freezing
    • thermal expansion
  • This occurs in regions with extreme temperatures

5 of 9

Biological Weathering

  • Rocks are broken down by living things or decomposed
  • Broken by:
    • Lichens
    • Tree roots

6 of 9

Chemical Weathering

  • The breaking of rocks when water and rocks interact with each other to create a chemical reaction.
  • Rocks are broken by:
    • water
    • gases

7 of 9

8 of 9

9 of 9