1. MECHANICAL WEATHERING WEATHERING

2. CHEMICAL WEATHERING Three types: Abrasion, Exfoliation, and Ice Wedging. Abrasion- constant collisions Exfoliation- plants, trees, roots, growing through due to extreme pressure. Ice wedging- Water thawing and freezing over time. Frozen water expands creating breaks in rocks.

5. Abrasion

10. Exfoliation

13. Ice Wedging

16. CHEMICAL WEATHERING

17. CHEMICAL REACTIONS There are two types of chemical weathering: Oxidation and Acid Rain. Oxidation- air and water reacting to metal in rocks usually results in a change of color. Acid Rain- chemical rain that results in rock decay such as holes or pieces missing.

18. Oxidation

21. Acid Rain

25. WEATHERING, EROSION, DEPOSITION Weathering: The Breaking down of rocks Erosion: The carrying away of rocks. Caused by water and wind. Deposition: The final resting place of rocks. (think of a deposit at the bank, it stays there…usually).