The preserved remains or traces of organisms that lived in the past are ________________

• Fossils

• Extinct

• Gone forever

• Artifacts

The study of fossils has allowed scientists to describe future environments and they history of our earth.

• True

• False

The ____________ age of a rock is its age compared to other rocks

• Actual

• Relative

• Estimated

• Radioactive

Geologists use ________________ dating to determine the ______________ ages of rocks.

• radioactive ; absolute

• radioactive ; relative

• radioactive ; predicted

• radioactive ; superposition

What does it mean when a fossil is petrified?

• The fossil was preserved in ice

• The fossil was made in the water

• Minerals replace all or part of an organism

• The fossil was preserved with chemicals

True or False.... The Law of Superposition states that rocks closest to the surface of the Earth are the youngest

• True

• False

Choose the best answer : Paleontologists are scientists who study __________________ from Earth's history.

• Extinct animals

• Ocean currents

• Rocks

• Fossils

What radioactive element is used to determine the age of remains of organisms?

• Carbon16

• Carbon 18

• Carbon 14

• Carbon 12

What kind of fossil best describes these two examples : Footprints and Trails

• Mold

• Trace

• Cast

True or False... Geologists divide Earth's long history into smaller units that make up the Geological time Scale

• True

• False