Fossils

Describes any group of living things that are no longer living.

• fossil

• extinct

• endangered

• dinosaur

The hardened remains of a living thing that died long ago.

• fossil

• extinct

• endangered

• minerals

Which type of fossil would look just like the body part of a once-living thing?

• mineral

• footprint

• cast

• petrified wood

Which is an imprint (also called trace) fossil?

• bone

• a cast

• an animal track

• amber fossil

Which type of rock are most fossils found?

• sedimentary rock

• metamorphic rock

• igneous rock

• fossils

If a scientist found a fish fossil in the desert, what can they infer?

• An animal ate the fish.

• The water covered the area long ago.

• Today's fish looks the same

• The fish is endangered.

What replaces the wood of a once-living thing to form petrified wood?

• amber

• cast

• mold

• minerals

This type of fossil is tree sap hardened and replaced by minerals.

• Petrified wood

• Imprint

• Amber

• Mold

The diagram shows layers of sedimentary rock and examples of the fossils each layer contains, Which layer contains the oldest fossils? 

• A. Layer 2
• B. Layer 4
• C. Layer 1
• D. Layer 3

Which fossil layer is the youngest? 

• A. Layer A
• B. Layer B
• C. Layer C
• D. Layer D