According to the law of superposition, the oldest fossils are found 

• At the top of the rock layers
• Near the bottom of the rock layers
• In the middle of the rock layers
• Somewhat near the surface

_{Which rock layer in the diagram seems to be the oldest?}

• F
• E
• B
• A

gaps in rock layers caused by erosion are called

• law of superposition
• unconformities
• uniformitarianism
• relative dating

Which type of dating method can be used on rock layers by applying the Law of Superposition?

• relative dating
• absolute dating
• radioactive dating
• radiometric dating

Which of the following is the oldest?

• Layer L
• Intrusion D
• Intrusion H
• Layer A

Which of the following correctly lists the layers of rock in order from youngest to oldest?

• A, B, C, D, E
• B, C, D, E, A
• E, D, A, B, C
• C, B, A, D, E

Which layer is the oldest and youngest?

• C and B
• C and E
• D and E
• A and B

Paleontologists infer that the earth is approximately how many years old?

• 4.5 million years
• 450 million years
• 450 billion years
• 4.5 billion years

What is a fossil?

• any dead organism
• the preserved remains or traces of an organism
• a perfect copy of a rock
• an unusual type of rock

_{Which rock layer in the diagram seems to be the oldest?}

• F
• E
• B
• A