How do fossils form? (Unit 4 Lesson 2 Quiz)

What causes petrified wood to form?

• Wood material is slowly filled with minerals.

• Sediment hardens around a piece of wood.

• A piece of wood is frozen for thousands of years.

• A piece of wood becomes trapped in tree sap.

A seashell sinks to the bottom of the ocean. It makes an impression in the sand. What must happen next in order for a fossil to form?

• Amber must cover the impression.

• Minerals must cover up the seashell.

• Mud must fill the impression and harden.

• The hard tissue must decay and harden.

Which part of an organism is the most likely to be fossilized?

• the feet

• the hard tissues

• the head

• the soft tissues

Tags

NGSS.MS-LS4-1

Which organism is most likely to form a fossil by becoming preserved in amber?

• bird

• fish

• clam

• ant

Which shows the correct order of steps in the formation of a fossil?

• branch leaves a mold, cast forms, branch is pressed into mud, mold fills with mud

• branch is pressed into mud, branch leaves a mold, mold fills with mud, cast forms

• cast forms, branch is pressed into mud, branch leaves a mold, mold fills with mud

• branch leaves a mold, cast forms, branch is pressed into mud, mold fills with mud