This document discusses the different types of weathering that break down rocks and soil over time. It defines chemical weathering as the changing of rock minerals, physical weathering as the breaking down of rocks by rain and abrasion, and explains that soil is made up of different layers called horizons and that exfoliation causes layers of rock to peel off.

1. Weathering This is a slide show by Brecken.

2. Weathering Weathering is the breaking down of rocks.

3. Chemical Weathering Chemical weathering happens when a rock breaks down and the minerals change.

4. Abrasion Abrasion is the sharp part of sand that changes rocks.

5. Physical Weathering Physical weathering is when stuff like rain breaks stuff down

6. Humus (Hue-mus) Humus is decayed plant an animal material

7. Horizon A horizon B horizon C horizon Horizons are layers of soil

8. Exfoliation When Exfoliation happens layers of rock peel off like an onion