What is Half-Life?

Radiometric dating

We use cookies to ensure that we give you the best experience on our website. We also use cookies to ensure we show you advertising that is relevant to you. If you lide without changing your settings, we'll assume that you are happy to receive all cookies on the BBC website. However, if you would like to, you can change your cookie settings at any time. British Broadcasting Corporation Home. Carbon is a radioactive isotope of carbon it has two extra neutrons in its nucleus making it unstable.

South Tyrol Museum of Archaeology. There's a small amount what is radioactive dating half life radioactive carbon in radioactivve living organisms. When they die no new carbon is taken in by the dead organism. The carbon it contained at the time of death decays over a long period of time. By measuring the amount of carbon left in dead organic material the approximate time since it died can be worked out. For example, intwo hikers discovered a mummified man, preserved for centuries in the ice on an alpine mountain.

Some rocks contain traces of uranium. Uranium has a jalf long half-life and so si measuring how much uranium is left in a rock daating approximate age can be worked radioctive. Back to Radiation for life index. You're using the Internet Explorer 6 browser to view the BBC website. Our site will work much better if you change to a more modern browser. It's free, quick and easy.

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British Broadcasting Corporation Home Accessibility links Skip to content Skip to local navigation Skip to bbc. This page has been archived and is no longer updated. Find out more about page archiving. BBC Radio 1 BBC 1Xtra. Print Science Uses of radioisotopes. Radioactive dating Carbon dating Carbon is a radioactive isotope of carbon it has two extra neutrons dafing its nucleus making it unstable. Activity Revision Map Give your revision some visual style with a Bitesize revision map!

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Radiometric or Absolute Rock Dating