Explain the process of radiometric dating
Ultimately these "creation scientists" were forced to admit that even for methods they accepted as sound, the age of the Earth would be vastly greater than the 6,000 they set out to prove.
Atmosphere of the Moon • Carbon dating • Creationism and social history • Dendrochronology • Evidence against a recent creation • Geomagnetism • Mitochondrial Eve • Petrified forest • Plate tectonics • Rotation of the Earth • Starlight problem • Y-chromosomal Adam • 101 evidences for a young age of the Earth and the universe • Atmosphere of the Moon • Baraminology • Biblical literalism • Borel's Law • Bumblebee argument • C-decay • Catastrophic plate tectonics • Creationist mathematics • De-evolution • Do you want to be descended from a monkey?
The key is to measure an isotope that has had time to decay a measurable amount, but not so much as to only leave a trace remaining.
Radiometric dating — through processes similar to those outlined in the example problem above — frequently reveals that rocks, fossils, etc.
are very much older than the approximately 6,000 to 10,000 years reckoned by young earth creationists.
The results showed that Ötzi died over 5000 years ago, sometime between 33 BC. Uranium has a very long half-life and so by measuring how much uranium is left in a rock its approximate age can be worked out.
Although the time at which any individual atom will decay cannot be forecast, the time in which any given percentage of a sample will decay can be calculated to varying degrees of accuracy.