Which is an example of physical weathering?

A. bits of iron in rock rusting when exposed to oxygen and water
B. acid rain breaking down compounds in rock statues
C. rock breaking apart when it falls from a cliff
D. oxygen interacting with minerals in rock

1 answer

C. rock breaking apart when it falls from a cliff

This is an example of physical weathering, as it involves the mechanical breakdown of rock without changing its chemical composition. The other options describe chemical weathering processes.