Question 1

Which radioactive element is usually used to date rocks?

Accepted Answer

Carbon-14

Answer

Oxygen-18

Answer

Uranium-238

Answer

Nitrogen-12

Question 2

How old do Paleontologists believe the Earth is?

Accepted Answer

4.6 billion years old

Answer

3.6 billion years old

Answer

5.6 billion years old

Answer

10 billion years old

Question 3

Why is radioactive decay important?

Accepted Answer

It is used to measure half lives.

Answer

It is used to measure absolute time

Answer

It is used to measure time of day

Answer

It is used to measure relative time.

Question 4

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

Accepted Answer

E,B,C,D,A

Answer

C,D,A,E,B

Answer

E,D,C,B,A

Answer

A,B,C,D,E

Question 5

How does a disconformity occur?

Accepted Answer

It is geologic.

Answer

It is historic.

Answer

It is absolute.

Answer

It is the totality

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