fossils

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

• fossil

• extinct

• endangered

• minerals

Where are most fossils found?

• A. In sand dunes
• B. In volcanoes
• C. In igneous rocks 
• D. In sedimentary rocks 

How are fossils created?

• A. Traces of organisms harden like rock. 
• B. Dead organisms are quickly buried for millions of years.
• C. Animals get trapped.
• D. All of the above

The gradual change in living things over time is..

• transition

• evolution

• age

• revolution

An organism is ______________ if it no longer exits and will never live again on Earth.

• rare

• extinct

• plentiful

• missing

Remains, imprints or traces of once-living organisms

• water
• superposition
• 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

what is the type of fossil ?

• Petrified wood

• Imprint

• Amber

• Mold

If you know the age of a fossil, you know the relative age of the ________________ it was found inside.

• sticky tar

• rock

• amber

• ice