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Chapter 10 vocab

QuestionAnswer
Fossils are the preserved remains or evidence of ancient
Catastrophism the idea that conditions and organism on Earth change in quick, violent events
Uniformitarianism states that geologic processes that occur today are similar to those that have occurred in the past
Carbon Film the fossilized carbon outline of an organism or part of an organism
Mold the impression in a rock left by an ancient organism
Cast is a fossil copy of an organism made when a mold of the organism is filled with sediment or mineral deposits
Trace Fossil is the preserved evidence of the activity of an organism
Paleontologist scientists who study fossils
Relative Age the age of rocks and geologic features compared with other rocks and features nearby
Superposition is the principle that in undisturbed rock layers, the oldest rocks are on the bottom
Inclusion a piece of an older rock that becomes part of a new rock
Uncomformity a surface where rock has eroded away, producing a break, or gap in the rock record
Correlation matching rocks and fossils from separate location
Index Fossils represents species that existed on Earth for a short length of time, were abundant and inhabited man locations
Absolute Age mean the numerical age, in years, of a rocks or object
Isotopes are atoms of the same element that have different numbers of neutrons
Radioactive Decay is the process by which an unstable element naturally change into another element that is stable
Half-Life is the time required for half of the parent isotopes to decay into daughter isotopes
Created by: Lorena R.
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