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Fossils 3-1

TermDefinition
fossil preserved remains or traces of living things
sedimentary rock a type of rock made from hardened sediment
mold a hollow area in sediment in the shape of an organism
cast a solid copy in the shape of an organism (made from sediment filling in a mold)
petrified fossil a fossil made when minerals replace all or part of an organism
carbon film an extremely thin layer of carbon on rock
trace fossil a fossil that provides evidence of the activities of ancient organisms (footprints, burrows, trails, etc,)
paleontologist a scientist who studies fossils
scientific theory a well-tested concept that explains a wide range of observations
evolution the gradual change in living things over long periods of time
extinct no longer exists on Earth
Created by: shaynedix
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