radioactive dating is a technique used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they were formed.
this is a newer rock
this rock is starting to decay
Radioactive Dating was discovered by a man named Ernest Rutherford and his assistant Frederick Soddy discovered that radioactive elements, such as uranium and thorium, broke down into other elements in a predictable sequence or series.
radioactive dating can be used to find out how old fossils or bones are
scientists use radioactive dating to find how much rocks have decayed or how old a rock is