Unit 3 Quiz

T or F: Fossils are preserved remains or traces of an organism that used to be alive.

• True

• False

What is the first step when creating a fossil?

• An organism dies and is covered in sediment.

• The material is subjected to pressure

• Minerals replace the substance in the remains

This type of fossil forms when the impression from the remains of an organism is filled with soil and hardens into the shape of the original cast?

• Petrified Fossil

• Trace Fossil

• Cast

A _______ is a detailed imprint, or hollow space left behind in the rock in the shape of a once living orgainism.

• Mold

• Cast

A ______ is when minerals fill in a mold to make a copy of an organism?

• Cast

• Mold

• Fossil

A _____ ______ is an impression left behind from activities of an organism.

• Trace Fossil

• Carbonized Fossil

According to the fossil record, how long ago do scientists believe life on Earth first appeared?

• 1 Million

• 3.5 Billion

• 65 million

A fossil and a photograph both show us a picture of what the _____ was like.

• Past

• Present

• Future

If a marine fossils are found in a desert, it possibly was once covered in ____________.

• Sand

• Water

• Ice

A _______ _________ is when an organisms body leaves a thin film outlining the shape of an organism on a rock.

• Carbonized Fossil

• Mold

• Trace Fossil