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A solid copy of the shape of an organism is...

• a fossil record

• a mold

• a carbon film

• a cast

Most fossils form when living things die and are buried by _______________ that hardens into rock over time.

• sediment

• people

• cement

• ants

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

• rare

• extinct

• plentiful

• missing

A hollow area in sediment in the shape of an organism or part of an organism is.....

• a cast

• a mould

• a trace fossil

• a petrified fossil

A ______________________ is a scientist who studies fossils.

• biologist

• chemist

• paleontologist

• astronomer

Scientist study the ____________________ to learn about the history of life, past environments on Earth, and how different groups of organisms have changed over time.

• fossil record

• animal record

• historical record

• Earth record

Which type of rock are most fossils found?

• sedimentary rock

• metamorphic rock

• igneous rock

• fossils

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

• amber

• cast

• mold

• minerals

What type of fossil is this?

• Mold
• Cast
• Preserved remains
• Trace fossil

What type of fossil is this?

• Trace fossil
• Mold
• Cast
• Carbon film