Radioactivity is the process by which unstable atomic nuclei lose energy by emitting radiation. It plays a crucial role in determining the ages of planetary surfaces through radiometric dating.
5 Must Know Facts For Your Next Test
Radioactive decay occurs at a predictable rate, described by an isotope's half-life.
The most common isotopes used in dating planetary surfaces are Uranium-238, Potassium-40, and Carbon-14.
Radiometric dating helps scientists estimate the age of rocks and meteorites, providing insight into the history of the solar system.
The decay products of radioactive isotopes can be measured to determine the time elapsed since the rock solidified.
Different isotopes are used for dating different types of rocks based on their expected age range and composition.