Building a Timeline

What is the law that states why F is younger than G?

• Law of uniformitarianism

• Law of superposition

• Law of cross-cutting relationships

• Law of Memorial Jags

Tags

NGSS.MS-ESS1-4

What is the order of these layers (OLDEST to YOUNGEST)

• BADFEC

• BACDEF

• FDBACE

• FBADEC

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

Index fossils CAN tell us the age of a rock layer.

• True

• False

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

The fossil record helps to build a timeline of life on Earth because...

• the older a fossil is, the deeper it will be found within layers of sedimentary rock.

• the older a fossil is, the closer it will be to the surface layers of sedimentary rock.

• gaps in the fossil record tell us all of the detailed changes to life on Earth during that gap.

• fossilized clocks from millions of years ago tell us exactly what time it was when specific events happened.

Tags

NGSS.MS-LS4-1

Which best describes a fossil that helps determine the relative age of a rock layer?

• Trace fossil

• Index fossil

• Radioactive fossil

• Unconformity fossil

Tags

NGSS.MS-ESS1-4

Why is D younger than B?

• D had to be there for B to intrude

• D and B happened at the same time

• B was laid on top of D

• B had to be there for D to intrude

Tags

NGSS.MS-ESS1-4

Which is the best indication of the relative age of a rock layer?

• Thickness of layer

• Position of layer compared to another

• The make-up of the layer

• The amount of carbon in it

The geologic time scale has units based on changes in rocks and fossils

• true

• false

Tags

NGSS.MS-ESS1-4

When part of the rock record is destroyed, the erosional gap that forms is a(n) ____.

• inclusion

• key bed

• unconformity

• superposition

Tags

NGSS.MS-ESS1-4