Question

Scientists can determine the age of a layer of rock by

A) examining the fossils within it.
B) identifying the minerals within it.
C) studying how it has been affected by erosion.
D) comparing the size of one layer with other layers.

Answer 1

Answer; Radiometric dating

Explanation:How do scientists determine the ages of the rock layers?

The age of rocks is determined by radiometric dating, which looks at the proportion of two different isotopes in a sample. Radioactive isotopes break down in a predictable amount of time, enabling geologists to determine the age of a sample using equipment like this thermal ionization mass spectrometer.