Unit # 2 - Geologic Time & Fossils

What type of event usually marks the end of an Era

• A Mass Extinction

• A Quinceanera

• An earthquake

• A Volcanic Eruption

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NGSS.MS-LS4-1

What is the relative age of a rock?

• The age determined by the things around it.

  (order of events)

• 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.

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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

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Remains or evidence of organisms that lived long time ago

• Fossil
• Unconformity
• Superposition
• Column

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NGSS.MS-LS4-2

Look at the reference image. Which combination accurately portrays the correct age order?

• B is higher so it is OLDER than D

• C is older than E, even though it is FOLDING upwards

• G is older than all the other layers

• A is higher, so is OLDEST layer

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NGSS.MS-ESS1-4

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

• F
• E
• B
• A

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NGSS.MS-ESS1-4

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

• A
• B
• C

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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

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NGSS.MS-ESS1-4

What is the youngest layer in the outcrop?

• A
• B
• C
• D

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NGSS.MS-ESS1-4

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

• 4
• 3
• 1
• 2

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NGSS.MS-ESS1-4

NGSS.MS-LS4-1