Which is an example of physical weathering?(1 point)

Question

Responses

a crack in rock growing larger as water freezes in it
a crack in rock growing larger as water freezes in it

microscopic organisms producing compounds that break down rock
microscopic organisms producing compounds that break down rock

bits of iron in rock rusting when exposed to oxygen and water
bits of iron in rock rusting when exposed to oxygen and water

lichen releasing a weak acid that dissolves rock

Answer 1

The correct answer is:

a crack in rock growing larger as water freezes in it

This is an example of physical weathering, specifically frost wedging, where the expansion of freezing water in cracks causes the rock to break apart.