Absolute and Relative Dating and Geologic Time

Scientists use radiometric dating (radioactive decay) to measure...

• relative time (dating)

• absolute time (dating)

• half-lives

• time of day

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NGSS.MS-ESS1-4

How does absolute age differ from relative age?

• only absolute dating indicates which rock is older than another
• only absolute dating finds the age in years
• only relative dating finds the age in years

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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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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 type of dating method can be used on rock layers by applying the Law of Superposition?

• relative dating
• absolute dating
• radioactive dating
• radiometric dating

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NGSS.MS-ESS1-4

Which of the following is the oldest?

• Layer L
• Intrusion D
• Intrusion H
• Layer E

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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

Layer B on side #1 (left) is a match to which layer on side #2 (right)?

• z

• y

• w

• there is no match

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NGSS.MS-ESS1-4

Absolute age is defined as:

• The age of rock determined by radiometric dating.

• The age of rock based on living animals.

• The age of rock based on its location.

• The age of rock determined by relative dating.

According to the law of __________, in horizontal sedimentary rock layers the oldest layer is at the bottom and the youngest layer is at the top. 

• Superposition
• Index Fossil
• Alfred Wegener
• Geologic Records

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NGSS.MS-ESS1-4