Most estimates of the age of the earth come from dating meteorites that have fallen to Earth because we think that they formed in our solar nebula very close to the time that the earth formed. Rubidium—strontium dating. Running Water. The reason we know that radiometric dating works so well is because we can use several different isotope systems for example, Uranium-Lead, Lutetium-Halfnium, Potassium-Argon on the same rock, and they all come up with the same age. The older the organism, the lower the ratio. Clair Patterson Radioactive elements decay, releasing particles and energy.
While some physicists used these discoveries for applications ranging from nuclear weapons to nuclear medicine, others applied them to understanding the natural world.
Elements occur naturally in the earth, and they can tell us a lot about its past. So the system is not as closed as secularists would like to think. Radiocarbon dating is a method used to determine the age of organic material by measuring the radioactivity of its carbon content. Like this lesson Share. Great way to memorize science concepts. Carbon, uranium, and potassium are just a few examples of elements used in radioactive dating.