Fossil Dating 2021

Front

What era were there three mass extinctions?

Back

Paleozoic

Front

How do we know when ichthyosaurs became extinct?

Back

After a certain point in the fossil record, no ichthyosaur fossils are found.

Front

What do we call all the known fossils and their position in the rock layers?

Back

Fossil Record

Front

What term describes species that existed in the past but no longer exist today?

Back

Extinction

Front

How do we know there was a mass extinction after the red line layer?

Back

There are more fossils under the red line than over, suggesting organisms died off.

Front

What is the term for the study of fossils?

Back

Paleontology

Front

What is a mass extinction?

Back

A widespread and rapid decrease in the biodiversity on Earth.

Front

What is the significance of the fossil record?

Back

It provides evidence of the history of life and the changes in species over time.

Front

What does the term 'extinct' mean?

Back

A species that no longer has any living individuals.

Front

What is the difference between relative dating and absolute dating?

Back

Relative dating determines the age of fossils based on their position in rock layers, while absolute dating provides a specific age using methods like radiometric dating.