Relative Dating and Fossils

Traces or remains of organisms that lived long ago

• Fossil

• Unconformity

• Superposition

• Column

Tags

NGSS.MS-LS4-1

How does the law of crosscutting explain the age of a fault?

• The fault is younger than the rocks above it.

• The fault is younger than the rocks it cuts through.

• The fault is older than the rocks above it.

• The fault is older than the rocks it cuts through.

Which of the following is the oldest?

• Layer L

• Intrusion D

• Intrusion H

• Layer E

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

The diagram shows fossils and rock features...

How does intrusion X compare to the ages of the other rock layers and fossils in this geologic column?

• Intrusion X is older than layers Y and Z.

• Intrusion X is younger than all the layers.

• Intrusion X is older than the clam and broadleaf fossils.

• Intrusion X is younger than the broadleaf and fern fossils.

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

The diagram shows fossils and rock features...

Which is younger than the clam fossil?

• Layer Z

• Broadleaf

• Reptile bone

• Intrusion X

Tags

NGSS.MS-ESS1-4

Certain fossils can be used to help determine the age of the rock layer in which the fossils are found. Which type of fossil is BEST to use when making this determination?

• marine mammal fossil

• swamp fern fossil

• trace fossil

• index fossil

Tags

NGSS.MS-ESS1-4

According to the Law of ______________, sedimentary rock

layers are laid down on top of each other. In

order for the rock layer to form, a layer of rock must have existed below it.

• Superposition

• Horizontality

• Unconformities

• Uniformitarianism

Tags

NGSS.MS-ESS1-4

Which layer is the oldest?

• A

• B

• C

• D

Tags

NGSS.MS-ESS1-4

Which layer is the youngest?

• D

• C

• A

• B

Tags

NGSS.MS-ESS1-4