Question

The first step in the formation of sedimentary rocks is weathering. Which of these is an example of weathering?

Select an answer

A.
A river carrying sediment downstream


B.
Waves crashing on rocks and breaking pieces off into sediment


C.
Sediment dropped at the delta of a river

Answer 1

B. Waves crashing on rocks and breaking pieces off into sediment — that's mechanical weathering (breaking rock into smaller pieces).