1. What causes Weathering?
Weathering is caused by:
Water
Waves
Wind
Gravity
Glaciers
2 G’s and 3 W’s

2. What are the types of Weathering?
Mechanical weathering also called physical weathering
Broken down into of the same material
No change in composition smaller pieces
Chemical Weathering
Breakdown or decomposition of rock that occurs when minerals are changed into different substances
Change in composition

3. What are the types of Mechanical/Physical Weathering?
Frost (Ice) Wedging
Process where water freezes in the cracks or rocks and wedges (pushed) it apart because water expands with it freezes

4. What are the types of Mechanical/Physical Weathering?
Abrasion
The wearing away of rock material by a grinding action
Usually caused by sediment in wind, water, and glaciers

5. What are the types of Mechanical/Physical Weathering?
3. Plants & Animals
Plant roots can split rock
Animals dig holes break up rocks

6. What are the types of Mechanical/Physical Weathering?
4. Exfoliation – gradual peeling of layers due to uplift and frost action Ex. Granite domes Yosemite N.P.