Are They Among Us Vocab Quiz

a subdivision of a geologic eon—an ___ is the second-longest period of geologic time

the gradual change in living things over many generations, due to changes in inherited traits

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NGSS.MS-LS4-4

all known fossils in the Earth’s history arranged in chronological order

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NGSS.MS-LS4-1

an organism preserved in rock that is common of a particular time or environment and used to help identify geologic periods

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NGSS.MS-ESS1-4

the dying out of a large number of organisms over a relatively short period of time

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NGSS.MS-LS2-4

NGSS.MS-LS4-1

a scientist who studies the fossils of prehistoric organisms

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NGSS.MS-LS4-1

NGSS.MS-LS4-2

the study of fossilized animals and plants

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NGSS.MS-LS4-1

NGSS.MS-LS4-2

the process by which the age of a fossil or rock is determined through measuring the decay of radioactive isotopes

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NGSS.HS-PS1-8

the geologic age of a fossil, as defined by other rocks or fossils

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NGSS.MS-ESS1-4

a method used to identify the approximate age of a rock layer by determining the ages of the layers above and below it

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NGSS.MS-ESS1-4