Question

Which is an example of physical weathering?(1 point)
Responses

limestone in rock dissolving when acid rain flows across it
limestone in rock dissolving when acid rain flows across it

bits of rock rusting when exposed to oxygen and water
bits of rock rusting when exposed to oxygen and water

wind blowing off bits of a rock over time
wind blowing off bits of a rock over time

oxidation of certain metals in rock
oxidation of certain metals in rock

Answer 1

An example of physical weathering is "wind blowing off bits of a rock over time." This process involves the mechanical breakdown of rocks without changing their chemical composition.