Geologic Time

The Law of Superposition helps scientists to determine what?

• The absolute age of rock layers

• The age of fossils

• The relative age of rock layers

• the super powers of squirrels

Tags

NGSS.MS-ESS1-4

According to the law of superposition, the oldest fossils are found 

• At the top of the rock layers
• Near the bottom of the rock layers
• In the middle of the rock layers
• Somewhat near the surface

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

_{Which rock layer in the diagram seems to be the oldest?}

• F
• E
• B
• A

Tags

NGSS.MS-ESS1-4

Which of the following correctly lists the layers in order from oldest to youngest?

• A, B, C, D, E

• E, B, C, D, A

• E, D, C, B, A

• C, B, A, D, E

Tags

NGSS.MS-ESS1-4

In this rock layer diagram there are two unconformities, a fault at E and an intrusion at D. Which unconformity occurred first?  How do you know?

• Intrusion D occurred first because the instrusion has been moved by the fault.
• The fault occurred first because it has moved the intrusion D.
• Intrusion D occurred first because it can be seen in all of the rock layers.
• Fault E occurred first because it is a normal fault.

Which rock layer most likely contains fossils of the most recently evolved organisms?

• 4
• 3
• 1
• 2

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

What is the relative age of a rock?

• The age determined by the things around it.

• The age of an igneous rock.

• The age determined by radioactive dating.

• The time it takes for 1/2 of the radioactive atoms to decay in an element.

Tags

NGSS.MS-ESS1-4

What is the absolute age of a rock?

• The age determined by the things around it.

• The age of an igneous rock.

• The age determined by radioactive dating.

• The time it takes for 1/2 of the radioactive atoms to decay in an element.

Tags

NGSS.HS-PS1-8

NGSS.HS-ESS1-5

Because of ___________, most of the geologic record of sedimentary rock layers has been lost. 

• unconformity
• erosion

Tags

NGSS.HS-ESS2-5

The ___ parts of organisms are more likely to become fossils.

• hard
• soft
• outer
• inner

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2