Geography Cycle Test Term 3

What is Physical Weathering?
Physical forces (frost and temperature changes)
1 of 5
Explain Freeze Thaw Action
Frozen water in cracks expands putting pressure on the sides of the crack. Many cycles are needed to weaken the rock.
2 of 5
Explain Exfoliation
Temperature changes between day and night cause rock surfaces to expand and cool down. This process weakens the surface of rocks causing them to peel.
3 of 5
What is Chemical Weathering?
Chemical- Chemical changes that weaken rocks.
4 of 5
Explain Carbonation
Rain has carbon dioxide (weak acid) carbonic acid. Rocks with fffffffffffffffffffffffffffffcalcium carbonate (limestone). The carbonic acid makes calcium carbonate soluable
5 of 5

Other cards in this set

Card 2

Front

Explain Freeze Thaw Action

Back

Frozen water in cracks expands putting pressure on the sides of the crack. Many cycles are needed to weaken the rock.

Card 3

Front

Explain Exfoliation

Back

Preview of the front of card 3

Card 4

Front

What is Chemical Weathering?

Back

Preview of the front of card 4

Card 5

Front

Explain Carbonation

Back

Preview of the front of card 5

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