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14 Cards in this Set
- Front
- Back
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Solidified remains or imprints of once living organisms
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FOSSIL
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Determining whether an event or object, such as a fossil, is older or younger than other events or objects
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RELATIVE DATING
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Estimating the age of a sample or event in years, usually by measuring the ratio of unstable atoms to stable atoms in the sample
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ABSOLUTE DATING
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The division of Earth's 4.6 billion year history into distinct intervals of time
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GEOLOGIC TIME SCALE
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A species of organism that has died out completely
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EXTINCT
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The study of the forces that drive the movement of pieces of the Earth's crust around the surface of the planet.
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PLATE TECTONICS
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The period in the geologic time scale begining about 570 mya ago and ending about 240 mya.
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PALEOZOIC ERA
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The period in the geologic time scale begining about 240 mya and ending about 65 mya
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MESOZOIC ERA
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The period in the geologic time scale begining about 65 mya and continuing until present day
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CENOZOIC ERA
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A group of mammals that includes humans, apes and monkeys
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PRIMATE
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Family of humans and several distinct humanlike species some of which were human ancestors
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HOMINID
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An early hominid that evolved more than 3.6 mya
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AUSTRALOPITHECINE
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Species of hominid that lived in europe and western Asia from 230,000 years ago to 30,000 years ago.
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NEANDERTHAL
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The period in the geologic time scale beginning when Earth originated approximately 4.6 bya.
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PRECAMBRIAN ERA
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