What is the definition of physical weathering?

Question

1.the expansion and contraction of rock due to changes in temperature
2.the formation of new minerals from rock due to chemical reactions
3.the transport of rock ans sediments by wind and water
4.the breakdown of rock and sediments into smaller pieces

Answer 1

The correct definition of physical weathering is:

4. the breakdown of rock and sediments into smaller pieces.

Physical weathering involves the process of breaking down rocks into smaller fragments without changing their chemical composition, often through processes like freeze-thaw cycles, thermal expansion, and abrasion.