Fossils /Grade 3

Front

What are the hard parts of an organism usually found as a fossil?

Back

Teeth, bones, and shells.

Front

What do we call an organism that is no longer found on Earth?

Back

Extinct.

Front

What material preserves insect remains very well?

Back

Amber.

Front

What is a fossil?

Back

A fossil is the remains or traces of a plant or animal that lived a long time ago, often found in rocks.

Front

What must happen first for a fossil to form?

Back

An animal dies.

Front

What is sediment?

Back

Sediment is small pieces of rock, soil, and other materials that settle at the bottom of water bodies.

Front

What is the process of minerals replacing the bone in a fossil called?

Back

Mineralization.

Front

What is a mold fossil?

Back

A mold fossil is a hollow impression of an organism left in sediment.

Front

What is a cast fossil?

Back

A cast fossil is a solid copy of the shape of an organism.

Front

What is amber?

Back

Amber is fossilized tree resin that can trap and preserve insects.