Question
Which is an example of physical weathering? (1 point)
bits of iron in rock rusting when exposed to oxygen and water
a crack in rock growing larger as water freezes in it
lichen releasing a weak acid that dissolves rock
microscopic organisms producing compounds that break down rock
bits of iron in rock rusting when exposed to oxygen and water
a crack in rock growing larger as water freezes in it
lichen releasing a weak acid that dissolves rock
microscopic organisms producing compounds that break down rock
Answers
GPT-4o mini
An example of physical weathering is **a crack in rock growing larger as water freezes in it**. This process is known as frost wedging, where the expansion of freezing water in cracks causes the rock to break apart.