Absolute Relative Dating

Radiometric dating is possible because the rates of decay of radioactive isotopes _____.

• change over time

• change from place to place

• are constant

• vary widely

Tags

NGSS.HS-PS1-8

If one-fourth of the carbon-14 is remaining then how many half-lives have passed?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-8

After 22,800 years, approximately what percentage of the original carbon-14 remains?

• 15%

• 12.5%

• 6.25%

• 3.125%

What is the law of superposition?

• The age of sedimentary rock not found in the original layers.

• Metamorphic rock is younger than the nearby igneous rock.

• Sedimentary rock in it's original position is older than layers above it.

• Metamorphic rock is older because it was deposited to nearby sedimentary rock.

Tags

NGSS.MS-ESS1-4

Which of the following is the oldest?

• Layer L

• Intrusion H

• Intrusion D

• Layer E

Tags

NGSS.MS-ESS1-4

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

• B, C, D, E, A

• E, D, C, B, A

• A, B, C, D, E

• B, C, D, A, E

Tags

NGSS.MS-ESS1-4

Analyze the seashell found in the white layer. Which statement is true of the rock layer that contains this fossil?

• It could also contain a fossil from the bottom layer.

• It is older than the layers below it.

• It is younger than the layers above it.

• It is older than the layers above it.

Tags

NGSS.MS-ESS1-4

According to the law of superposition, which layer is the youngest?

• F

• B

• E

• A

Tags

NGSS.MS-ESS1-4

Is intrusion V older or younger than layer W?

• younger

• older

Tags

NGSS.MS-ESS1-4

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

• F, E, C, B, A, D

• F, E, D, C, B, A

• A, B, C, D, E, F

• D, F, E, C, B, A

Tags

NGSS.MS-ESS1-4