Carbon dating explained gcse Make your own sex cam free
There are three main examples of this: i) Carbon dating - many natural substances contain two isotopes of Carbon. Types of rock (igneous) contain this type of uranium so can be dated, by comparing the amount of uranium and lead in the rock sample.iii) Igneous rocks also contain potassium-40, which decays to a stable form of Argon.
This is useful for people working with radiation, they wear radiation badges to show them how much radiation they are being exposed to. Dating materials - The older a radioactive substance is the less radiation it will release. The half-life of the radioactive substance can be used to find the age of an object containing that substance. ii) Uranium decays by a series of disintegrations that eventually produces a stable isotope of lead.Radioactive substances will give out radiation all the time, regardless of what happens to them physically or chemically.As they decay the atoms change to daughter atoms, until eventually there won't be any of the original atoms left.Here are the main uses you will be expected to know about: 1.Uses in medicine to kill cancer - radiation damages or kills cells, which can cause cancer, but it can also be used to kill cancerous cells inside the body.