radioisotope used for dating
{"Image DocumentName": "Carbon Dating of RocksThe rate of decay of each radioactive element is constant.", "Image ImageDescription": "Elements have a half life\u2019s this is what it takes for half of the radioactive atoms to decay. Geologists use radioactive dating to determine the absolute age of rocks. Geologists compare how much of the element is left compared to how much is normally there under normal conditions. Since they know the half-life of elements they can then deduce the actual age of the rocks.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}