Geography revision 2

about types of weathering

What are the two types of Physical weathering?
Freeze thaw and Onion skin
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What is Freeze thaw weathering?
When water fills a crack and then freezes, which makes it expand and forces the rock apart
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Is onion skin weathering when the top layer of rock is heated and expands and then cools and contracts making the layer of rock peel off like an onion skin?
True
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What is the only type of biological weathering?
When plant roots grow down into cracks in rocks and force them apart with their roots
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Is Chemical weathering when Scientists pour chemicals on rocks to erode them?
No it is when acid rain dissolves rock like limestone
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Other cards in this set

Card 2

Front

What is Freeze thaw weathering?

Back

When water fills a crack and then freezes, which makes it expand and forces the rock apart

Card 3

Front

Is onion skin weathering when the top layer of rock is heated and expands and then cools and contracts making the layer of rock peel off like an onion skin?

Back

Preview of the front of card 3

Card 4

Front

What is the only type of biological weathering?

Back

Preview of the front of card 4

Card 5

Front

Is Chemical weathering when Scientists pour chemicals on rocks to erode them?

Back

Preview of the front of card 5

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