Question

Which are examples of physical weathering? Check all that apply.
grinding away of rock surface
top layers flaking off due to release of pressure
water dissolving soft rock
rust forming due to oxidation
temperature changes from hot to cold
animals digging burrows to make homes
water freezing, expanding and thawing repeatedly
acid rain weathering a statue
tree roots growing in the cracks of rock

Answer 1

1. grinding away of rock surface
2. top layers flaking off due to release of pressure
3. temperature changes from hot to cold
4. animals digging burrows to make homes
5. water freezing, expanding and thawing repeatedly
6. tree roots growing in the cracks of rock

Explanation:

Physical weathering involves the mechanical breakage of rocks into smaller particles while maintaining the chemical composition of the rock. Chemical weathering, on the other hand, involved changing the chemical composition of rocks that makes it prone to weathering.

The rest of the choices for example, are all chemical weathering processes;

water dissolving soft rock

rust forming due to oxidation

acid rain weathering a statue

Learn More:

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