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Science Vocab

TermDefinition
Uniformitarianism When changes in the Earth happens slowly.
Catastrophism When changes in the Earth happens very quickly.
Modern Geology Uniformitarianism and Catastrophism combined.
Extinction When something is no longer in existence.
Paleontology The study of ancient life, such as fossils.
Fossils Remains or traces, like teeth marks, from years ago.
Unconformities The lack of deposition or erosion.
Superposition The idea that younger rock layers lay above older rock layers.
Relative Dating Using superposition to figure out whether a rock is older or younger than the layers around it.
Absolute Dating Using radiometric dating to determine the exact age of a rock.
Radiometric Dating The method used to find the exact age of a rock.
Folding When layers bend under pressure.
Tilting When forces cause layers to become slanted.
Intrusion A crack in the earth, that causes magma to seep out and form an intrusive igneous rock.
Created by: Crystal25
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