What are fossils?

Fossils normally form in ________ rock.

• sedimentary

• igneous

• metamorphic

• volcanic

Which parts of an organism are most likely to become fossils?

Give examples of parts of organisms that can become fossils.

A mold fossil is:

• a fossil formed when an organism is buried in sediment and then decays, leaving an empty space in the shape of the organism.

• a fossil formed from the remains of an organism that lived long ago.

• a fossil that is created when minerals fill in the empty space left by a decayed organism.

• a fossil that is formed from the impressions left by plants.

A cast fossil is:

• a fossil formed when an organism is buried and then decays, leaving a mold that is filled with minerals.

• a fossil that is directly preserved in its original form.

• a fossil that is formed from the impressions left by an organism.

• a fossil that is formed from the remains of plants.

A petrified fossil is:

• a fossil formed by the replacement of organic material with minerals

• a fossil that is still alive

• a fossil that is made of ice

• a fossil that is found only in deserts

A carbon film fossil is:

• a type of fossil consisting of an extremely thin coating of carbon on rock

• a fossil formed by the preservation of soft tissues

• a fossil that is created by the replacement of organic material with minerals

• a type of fossil that is found only in sedimentary rock

A trace fossil is:

• a fossilized impression of an organism

• a fossil that shows the activity of an organism

• a fossilized bone or shell

• a fossil that is not yet discovered

Where can other fossils be found?

• A) Tar

• B) Amber

• C) Ice

• D) All of the above.