Relative Age of Rocks

Geologists use the law of _________ to determine the relative ages of sedimentary rock layers.

• geology

• superposition

Tags

NGSS.MS-ESS1-4

Which is older, A or D?

• A

• D

Tags

NGSS.MS-ESS1-4

To be considered an index fossil, it had to have lived for a relatively short period of time.

• True

• False

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

States that younger rocks lie above older rocks if the layers have not been disturbed

• Law of crosscutting

• Law of superposition

• Relative Dating

• Unconformity

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

• A

• B

• C

Tags

NGSS.MS-ESS1-4

Which fossil is the index fossil?

• A

• B

• C

• D

Tags

NGSS.MS-ESS1-4

Which rock layer in the diagram seems to be the oldest?

• F

• E

• B

• A

Tags

NGSS.MS-ESS1-4

What are the relative ages of the features in order from oldest to youngest?

• Limestone, Basalt, Fault, Siltstone

• Siltstone, Fault, Basalt, Limestone

• Limestone, Fault, Basalt, Siltstone

• Limestone, Siltstone, Fault, Basalt

Tags

NGSS.MS-ESS1-4

Relative dating of rock layers tells us that the deeper we dig, _______.

• the younger the rocks get

• the smellier the rocks get

• the harder the rocks get

• the older the rocks get

Tags

NGSS.MS-ESS1-4

What can be used to determine the relative ages of rock layers?

• Living animals

• Living plants

• Minerals

• Fossils

Tags

NGSS.MS-ESS1-4