Question

1. choose the best answer.

flowing water smoothing rocks in a stream is an example of _ weathering.
natural
physical
chemical
dynamic

Explanation:

Physical weathering involves processes that break down rocks without changing their chemical composition. Flowing water smoothing rocks in a stream is a physical process as it is mainly due to the mechanical action (abrasion) of water and sediment against the rocks. Chemical weathering would involve reactions like dissolution or oxidation. Dynamic is not a standard term for this type of weathering category in geology. Natural is too broad as both physical and chemical weathering are natural processes.

Answer:

physical