science
Grade-4-
Easy
Question
When water freezes, it breaks down the rock by the force of __________.
- Reduction
- Expansion
- Condensation
- Evaporation
Hint:
When water freezes, it breaks down the rock by the force of expansion.
The correct answer is: Expansion
- The water will expand when it is frozen and work as a wedge.
- The frozen water will widen the cracks of the rock.
- This will lead to splits in the rock.
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