Multiple choice

Rain falling in the crack of a rock, freezing & expanding, then wearing away more of the rock:

  1. oxidation

  2. physical weathering

  3. chemical weathering

  4. exfoliation

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Frost wedging is a classic example of physical weathering, where water expands upon freezing, exerting force that splits the rock.