Question

Which is one piece of evidence of seafloor spreading?

fossil material
continent material
drilled core samples
ocean water samples

Answer 1

One piece of evidence of seafloor spreading is **drilled core samples**. These samples are taken from the ocean floor and provide information about the age and composition of the rocks, showing that newer, younger rocks are found near mid-ocean ridges and older rocks are further away, supporting the theory of seafloor spreading.