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Published byBrooke Cochran Modified over 11 years ago
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The breakdown of rocks into smaller particles.
Weathering The breakdown of rocks into smaller particles. 2 Types Physical: Only size and shape changes. Chemical: composition changes
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Surface Area
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What causes physical weathering?
Ice = freezing and thawing (frost cycle).
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Physical Weathering Wind = rocks get pitted from blown particles.
Ventifact = angular, pitted rock with 1 or more flat sides.
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Physical Weathering Water = rocks become round, smooth and smaller.
Abrasion = rocks break down from rubbing against each other.
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4. Plants = roots grow and expand, breaking rock apart.
Physical Weathering 4. Plants = roots grow and expand, breaking rock apart.
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Physical Weathering Animals = Ants / Worms Humans
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Chemical Weathering 3 Types Oxidation = reaction with O2
Hydrolysis = reaction with H2O Carbonation = reaction with CO2 ** Occurs faster in hot and wet weather.
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Oxidation
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Hydrolysis
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Carbonation
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Salt (Honeycomb)
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