8th grade mr. Hardy

Question Answer
Absolute age Age is in years, of a rock or other; can be determined by using properties of the atoms that make up materials
Half-life Time it takes for half the atoms of an isotope to decay
Radioactive decay Process which some isotopes break down into other isotopes and particles
Radiometric dating Process used to calculate the absolute age of rock by ,was urging the ratio of parent isotope to daughter product in a mineral and knowing the half-life of the parent
Uniformitarianism Principle stating that earth processes occurring today are similar to those that occurred in the past

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