Mia has been learning about the ways scientists study rocks and how they determine their relative ages.
She enjoys studying fossils. She learned how fossils called index fossils are found in the rock layers. The index fossils help scientists study rock ages. In what way do index fossils help determine rock ages?
The shapes and lines they hold within the rock. Rocks can simply be regenerated and melted back into a new and different form. Lines and texture usually prove how old the rocks are.
