Geologic Time/Rock Ages

What is the criteria for a good index fossil?

• lives for long time, covers small area

• lives for long time, covers large area

• lives for a short time, covers small area

• lives for a short time, covers large area

A shell fossil is found at the top of the Rocky Mountains. What is the best explanation for this?

• The organism must have traveled to the river from the ocean and that the fossil formed over the last few thousand years.

• The area must have once been covered by the sea and that the fossil formed over hundreds of years.

• The organism must have traveled to the river from the ocean and that the fossil formed over the last few years.

• The area must have once been covered by the sea and that the fossil formed over millions of years

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

What is the oldest rock layer?

• I

• B

• R

• H

Tags

NGSS.MS-ESS1-4

What does the straight, diagonal line represent?

• intrusion

• new layer

• fault

• it's a mistake

Tags

NGSS.MS-ESS1-4

Which method of age dating is considered more accurate?

• relative

• absolute (radiometric dating)

Which fossil is the youngest?

• ammonite

• eurypterids

• brachiopods

• trilobites

Tags

NGSS.MS-ESS1-4

What is used to determine the relative age of rock layers?

• principle of uniformitarianism

• law of superposition

• law of conservation of mass

• radiometric dating

Tags

NGSS.MS-ESS1-4

A scientist finds Leptodus fossils. In what era and period were they deposited?

• Paelozoic, Cambrian

• Paleozoic, Pennsylvanian

• Paleozoic, Permian

• Paleozic, Ordovician

Tags

NGSS.MS-LS4-1

What is the Law of Superposition?

• The rock layers can change their position and push younger rock layers under older rock layers.

• The rock layers can change their position and push older rock layers under younger rock layers.

• The rock layers on top are the youngest layers and the lower rock layers are the oldest layers.

• The rock layers on top are the oldest layers and the lower rock layers are the youngest layers.

Tags

NGSS.MS-ESS1-4

What can be used to determine the relative age of fossils?

• law of superposition

• faults

• intrusions

• carbon dating

Tags

NGSS.MS-ESS1-4