What is the differences between weathering and erosion?
Erosion needs movement and friction to break down and weaken rocks. While weathering is when rocks are weakened by the weather (acid rain, snow) or by tree roots
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What are the 4 types of Weathering?
Freeze Thaw, Onion Skin Weathering, Biological Weathering, Chemical Weathering.
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What is Freeze Thaw?
Freeze thaw is when water fills a crack in a rock and freezes over in the night which widens the crack and eventually breaks up into lots of fragments
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What is Onion Skin Weathering?
When a rock is repeatedly heated and cooled (in places like hot deserts) As it is heated, the outer layer of rock peels off due to continual expansion and contraction.
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What is Biological Weathering?
This is caused by plants and animals. Seeds may fall into cracks and roots appear turning into trees later on. As trees grows, roots breaks down the rock
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Other cards in this set
Card 2
Front
What is the differences between weathering and erosion?
Back
Erosion needs movement and friction to break down and weaken rocks. While weathering is when rocks are weakened by the weather (acid rain, snow) or by tree roots
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