Unit 5a Quiz: Relative and Absolute Age Dating

Which of the following is the oldest?

• H

• B

• G

• F

Tags

NGSS.MS-ESS1-4

Which of the following is the youngest?

• H

• B

• G

• F

Answer explanation

G cuts across the horizontal layers and H, so it is younger than them.

Tags

NGSS.MS-ESS1-4

Which of the following is the correct order of rock layers and events from oldest to youngest?

• E, D, A, B, C

• C, B, A, D, E

• C, B, A, E, D

• C, B, E, A, D

Tags

NGSS.MS-ESS1-4

After 4 half lives, what % of original isotope remains?

• 6.25%

• 12.5%

• 25%

• 50%

Tags

NGSS.HS-PS1-8

Suppose the radioactive isotope you are modeling has a half-life of 713 million years. How old is the sample if 1/8 of the original isotope remains?

• 89.125 million years old

• 5,704 million years old

• 713 million years old

• 2,139 million years old

Tags

NGSS.HS-PS1-8

If the amount of Carbon-14 has decayed to 1/64th the amount of its original amount, how many half-lives have passed?

• 5

• 3

• 4

• 6

Some fossil bones contain 1/16 of their original amount of carbon-14. How old are the bones? (Carbon-14 has a half-life of 5,730 years)

• 4 years old

• 358.125 years old

• 22,920 years old

• 409.3 years old

Tags

NGSS.HS-PS1-8

What is the correct order of rock layers from oldest to youngest?

• A, B, C, D, E

• E, C, B, A, D

• E, C, B, D, A

• E, C, D, B, A

Tags

NGSS.MS-ESS1-4