*Radiometric * Carbon * Age * Fossils *Radioactive *Half Life * Neutrons *Radioactive Dating
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The age of the (1) __________ is determined by (2) __________ or Radioactive dating technique in which the (3) __________ of carbon and found (4) __________ elements is determined to calculate the (5) __________ of fossil or the rock.
Today's knowledge of fossil ages comes primarily from radiometric dating, also known as (6) __________ . Radiometric dating relies on the properties of isotopes. These are chemical elements, like (7) __________ or uranium, that are identical except for one key feature - the number of (8) __________ in their nucleus.
