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Unit 4, 3& 4 vocab

QuestionAnswer
Absolute Dating any method of measuring the age of an event or object in years.
Radioactive Decay the process in which a radioactive isotope tends to break down into a stable isotope of the same element or another element.
Half-Life the time required for half of a sample of a radioactive decay to form a daughter isotope.
Radiometric Dating a method of determining the absolute age of an object by comparing the relative percentages of a radioactive (parent) isotope and a stable (daughter) isotope.
Radiocarbon Dating Methods photosynthesis, ages of wood,bones, shells.
Potassium Argon Dating occurs in 2 stable isotopes, potassium 41 and potassium 39, and 1 radioactive isotope that occurs naturally potassium -40.
Uranium- Lead Dating based on measuring the amount of lead -206 isotope in a sample.
Geology the scientific study of the origin, history, and structure of Earth and the processes that shape Earth.
Geologic Time Scale the standard method used to divide Earth's long natural history into manageable parts.
Created by: brooke.peterson
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