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14 Cards in this Set

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