Question

2
A geologist compares two rock layers from two different parts of the United States and believes they are from the same time period. What could he
look for to confirm that the rock layers formed during the same time period?

Answer 1

Answer:

Either (1.) Fossils or (2) Radiometric dating.

Explanation:

Fossils are an obvious answer to this, but radiometric dating is the method most scientists use to find the age of rocks. Radioactive isotopes break down predictably, so the farther along this process is, the older the rock is.