Fossils

Front

What is a fossil?

Back

A fossil is the preserved remains or traces of a living thing from a long time ago.

Front

How do most fossils form?

Back

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

Front

Where can the oldest layer of fossils be found?

Back

The oldest layer can be found in the bottom layer of rock.

Front

Which animal part is most likely to form a fossil?

Back

Bone is the animal part that is most likely to form a fossil.

Front

Why do bones and teeth remain as part of some fossils?

Back

Bones and teeth remain because they are hard and do not decay easily.

Front

What type of fossil shows evidence of ancient organisms' activities?

Back

A trace fossil shows evidence of the activities of ancient organisms, like footprints.

Front

What is sediment?

Back

Sediment is small pieces of rock, soil, and other materials that can bury living things.

Front

What is a mold fossil?

Back

A mold fossil is a hollow impression left in rock by a living thing.

Front

What is a cast fossil?

Back

A cast fossil is a solid copy of the shape of a living thing.

Front

What is a carbon film fossil?

Back

A carbon film fossil is a thin layer of carbon left behind from a living thing.