Question

a rock breaking in limestone due to groundwater slowly dissolving it over time is an example of:
a) physical weathering
b) chemical weathering
c) both physical and chemical weathering
d) neither physical nor chemical weathering

Explanation:

Physical weathering breaks rocks physically without changing their chemical composition. Chemical weathering changes the chemical makeup of rocks. Frost - wedging (a rock breaking due to water freezing and expanding) is physical weathering as it is a mechanical process.

Answer:

a) Physical weathering