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Chapter 10 Notes

Lesson 1 2 3

QuestionAnswer
Fossil the preserved remains of evidence
Catastrophism the idea conditions and organsims on Earth change in quick, violent events.
uniformitarism that geologic procceses that occur today are what happened in the past
carbon film the fossilizied outline of a part of an organism
mold the impression in a rock made by an organism
cast a fossil copy of an organism made by mold
trace fossil the preserved evidence of the activity for an organism
paleontologists people who study fossils
relative age is the age of rocks and geological features compared with other rocks and features near by.
superposition the principle that is undisturbed rock layers, the oldest rocks are on the bottom
inclusion a piece of an older rock that becomes a part of new rock
unconformity a surface where rock has eroded away
correlation matching rocks and fossils from seperate locations
index fossils species that existed on Earth for a short length of time, were abundant and inhabitated in many locations
absolute age to mean the numerical age, in years, of an rock or object
isotopes atoms of some element that have different numbers of newtrons
radioactive decay the procces which an unstable element changes into another element that is stable.
half life the time required for half of the parent isotopes to decay into daughter isotopes
Created by: BAww
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