Which is an example of physical weathering?
Understand the Problem
The question is asking to identify which of the given options is an example of physical weathering, which is a geological process that breaks down rocks without changing their chemical composition.
Answer
a crack in rock growing larger as water freezes in it
The correct answer is 'a crack in rock growing larger as water freezes in it'.
Answer for screen readers
The correct answer is 'a crack in rock growing larger as water freezes in it'.
More Information
Physical weathering involves the mechanical breakdown of rocks and minerals into smaller pieces. Frost wedging, where water freezes and expands in cracks, causing the rock to break apart, is a classic example.
Tips
A common mistake is confusing physical and chemical weathering. Remember, physical involves changes in size and shape, while chemical involves changes in composition.
Sources
- Physical Weathering Examples - Study.com - study.com
- What is physical weathering? Give an example. - Geography - Vaia - vaia.com
- Weathering - British Geological Survey - bgs.ac.uk
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