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Weathering Notes

Weathering - ________________________________________________________
o Two Kinds –

Mechanical Weathering - ______________________________________
_________________________________________________________

_________________________________________________________
_________________________________________________________

4 types –

1. Abrasion - __________________________________________

2. Frost Wedging - _____________________________________
____________________________________________________

3. Organic Activity - ____________________________________
____________________________________________________

4. Thermal Expansion - __________________________________
____________________________________________________

Chemical Weathering - ________________________________________
_________________________________________________________

4 types –

1. Oxidation - _________________________________________

2. Carbonation - _______________________________________
o Gets into the soil and dissolves the rocks beneath

3. Sulfuric Acid - ______________________________________

Hydrolysis - __________________________________________
o Water can dissolve minerals or form new minerals

Factors that affect the rate of weathering
o 1. Composition of the rock - ________________________________________
_____________________________________

Sandstone is easily weathered
Moh’s Scale = 3.5
o 2. Climate - ____________________________________________________
o 3. Surface Area - ________________________________________________
_____________________________________
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