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12 Cards in this Set
- Front
- Back
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Fossil
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The preserved remains or traces of living things.
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Paleontoligists
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Paleontologists use the fossils they collect to determine what past life forms were like
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Sedimentary Rock
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A type of rock made by hardened sediment.
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Petrified Fossil
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Petrified fossils are fossils in which minerals replace all or part of an oganism.
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Mold
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A mold is a hollow area in sediment in the shape of an organism or part of an organism.
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Cast
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A cast is a copy of the shape of an oganism.
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Carbon Film
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Carbon film is an extremely thin coating of carbon on rock.
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Trace Fossil
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Trace fossils provide evidence of the activities of ancient organisms.
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Scientific Theory
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A scientific theory is a well-tested concept that explains a wide range of observations.
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Evolution
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Evolution is the gradual change of living organisms over long periods of time.
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Extinct
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A type of organism is extinct if it no longer exists and will never again exist.
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Fossil Record
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The fossil record provides evidence about the history of life on Earth.
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