Fossils

What is a fossil?

• A type of rock

• Evidence in rock of the presence of a plant or animal from an earlier period in time

• A type of mineral

• A type of soil

Tags

NGSS.MS-LS4-1

Which of the following is NOT a type of fossil?

• Dinosaur skeleton

• Ammonite shell

• Fish imprint

• Fresh leaf

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NGSS.MS-LS4-1

Why don’t we have fossils of an organisms' soft parts?

• Soft parts decay quickly and are not preserved.

• Soft parts are too small to fossilize.

• Soft parts are eaten by other animals.

• Soft parts are not important for fossilization.

Why don’t we have fossils of every organism that ever lived?

• Not all organisms lived in areas where fossilization could occur.

• All organisms are too small to fossilize.

• Fossilization is a very common process.

• Every organism leaves a fossil behind.

Tags

NGSS.MS-LS4-1

Why aren’t there any fossils of jellyfish?

• Jellyfish have soft bodies that do not fossilize well.

• Jellyfish live in deep oceans where fossils cannot form.

• Jellyfish are too small to leave fossils.

• Jellyfish are not important enough to fossilize.

Which type of fossil is formed when an organism leaves an impression on the rock?

• Mold Fossil

• Cast Fossil

• Trace Fossil

• True Form Fossil

Which type of fossil is created when minerals fill in the mold left by an organism?

• Mold Fossil

• Cast Fossil

• Trace Fossil

• True Form Fossil

Which type of fossil represents the actual remains of an organism?

• Mold Fossil

• Cast Fossil

• Trace Fossil

• True Form Fossil

Which type of fossil shows an animal's activities, such as footprints or nests?

• Mold Fossil

• Cast Fossil

• Trace Fossil

• True Form Fossil

Which type of fossil is a fossilized imprint of an organism's footprints, trails, burrows, nests, or eggs?

• Body (true form) Fossil

• Mold/Cast Fossil

• Trace Fossil

• Mineral Fossil