Geologic Time Scale

a model scientists use to describe the timing of events and the relationships between those events in earth’s history.

• geologic time scale

• era

• period

• epoch

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NGSS.MS-ESS1-4

geologic time intervals that eras are divided into.

• geologic time scale

• era

• period

• epoch

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NGSS.MS-ESS1-4

a fossil found in a narrow time range but widely distributed around the earth; used to date rock layers.

• Petrified

• Mold

• Cast

• Index

• Trace Fossil

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NGSS.MS-ESS1-4

What Era were mammals first seen?

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

According to paleontologists, how old is the Earth?

• 3.5 Billion Years Old

• 543 Million Years Old

• 57 Million Years Old

• 4.6 Billion Years Old

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NGSS.MS-ESS1-4

looks at where the fossil is located to determine its age relative to other fossils.

• Relative Dating

• Absolute Dating

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NGSS.MS-ESS1-4

Analyze the layers of undisturbed sedimentary rock. Which layer of sedimentary rock is oldest?

• Q

• R

• S

• T

• U

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NGSS.MS-ESS1-4

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 rocks

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NGSS.MS-ESS1-4

Which of the following statements about the fossil record is true?

• all organisms become fossils
• organisms having soft body parts make up most of the fossils
• all organisms that have shells become fossils
• the fossil record is incomplete

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NGSS.MS-LS4-1

The Geologic Time Scale is a record of what?

• old geologists
• sweet geology music
• the known history of rocks and fossils
• a list of every living thing ever

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NGSS.MS-ESS1-4