Fossils 2020

A hollow area in sediment 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 organisms that die become

• buried in sediments

• preserved in tree sap

• preserved in ice

• preserved in tar

In the process of fossil formation, what materials replace the organism's remains?

• ice

• soil

• minerals

• water

Which part of an organism is LEAST likely to form a fossil?

• shell

• tooth

• bone

• skin

A petrified fossil occurs when

• a mold replaces the original organism

• minerals replace all or part of an organism

• the organism was really afraid when it died

• the fossil was coated with carbon

What phrase best describes a fossil?

• things found in sedimentary rock

• a dead dinosaur

• the preserved remains or traces of dead animals

• the preserved remains or traces of dead organisms

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

• minerals

• sediment