Geologic Time Scale and Topography

Front

What are fossils that are abundant, easily recognizable, short lived, and widespread called?

Back

Index fossils

Front

What is the significance of fossils in dating Earth's history?

Back

They provide evidence of organisms that existed during a previous time in Earth's history.

Front

The Law of Superposition states…

Back

Younger rock layers are on top of older rock layers.

Front

What is the most recent time period in Earth's history?

Back

Cenozoic Era

Front

Which of the fossils is the oldest?

Back

Trilobite

Front

What is the Geologic Time Scale?

Back

A system of chronological dating that relates geological strata to time.

Front

What are the three main eras of the Geologic Time Scale?

Back

Paleozoic, Mesozoic, and Cenozoic.

Front

What type of rock is most commonly associated with fossils?

Back

Sedimentary rock.

Front

What is an example of an index fossil?

Back

Trilobite.

Front

What does absolute dating measure?

Back

The actual age of a rock or fossil in years.