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Earth's Past Voc

TermDefinition
Absolute Age uses the decay of radioactive elements to find the numerical age in years, of a rock or object
Angular Unconformity sedimentary layers are deposited on top of tilted of folded sedimentary layers that have been eroded
Body Fossil the original tissue of the organism is preserved.
Cast a fossil copy of an organism made when a mold of the organism is filled with sediment or mineral deposits
Catastrophism the idea that conditions and organism on Earth change in quick, violent events
Carbon Film the fossilized carbon outline of an organism or part of an organism
Correlation matching rocks and fossils from separate location
Crosscutting Relationships when the rocks move along a fracture line
Fossil the preserved remains or evidence of ancient living things
Geologist a scientist who studies the Earth's crust as well as the processes and history that shape it
Half-Life the time required for half of the parent isotopes to decay into daughter isotopes
Inclusion a piece of an older rock that becomes part of a new rock
Index Fossil represents species that existed on Earth for a short length of time, were abundant, and inhibited many locations
Isotope atoms of the same element that have different numbers of neutrons
Law of Superposition explains that the newest rock layers will be on top of the older ones, unless some types of disturbance occurs.
Mold the impression in a rock left by an ancient organism
Paleontologist scientist that studies fossils
Radioactive Decay the process by which an unstable element naturally changes into another element that is stable
Trace Fossil the preserved evidence of the activity of an organism
Unconformity a surface where rock has eroded away, produced a break, or gap, in the rock record
Uniformitarianism states that geologic processes that occur today are similar to those that have occurred in the past
Created by: shutt141
 

 



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