Fossils Lesson 1

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

• a cast
• a mold
• a trace fossil
• a petrified fossil

A solid copy of the shape of an organism is

• a mold
• a carbon film
• a cast
• a fossil record

What type of fossils provide evidence of the activities of ancient organisms?

• molds and casts
• petrified fossils
• trace fossils
• carbon films

Which of the following substances is not able to preserve entire organisms?

• sticky tar
• water
• amber
• ice

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

•  sediment
• minerals

A(n) _________ is an extremely thing coating of carbon on rock

• petrified fossil
• carbon film

The term __________ is used to identify a scientist who studies fossils?

• archeologist
• paleontologist

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

• evolution
• fossil record

____________ is a gradual change in living things over long periods.

• evolution
• fossil record

An organism is ____________ if it no longer exists and will never live again of Earth.

• a fossil
• extinct