Carbon dating explained gcse

16-Nov-2014 14:07

Half-life - is the time it takes for half of the radioactive particles to decay.It is also the time it takes for the count-rate of a substance to reduce to half of the original value.Argon is a gas but if it can't escape from the rock then the amount of trapped argon can be used to date the rock.Radiocarbon or Carbon-14 dating is a technique used by scientist to date bones, wood, paper and cloth. It is produced in the Earth’s upper atmosphere when Nitrogen-14 is broken down to form the unstable Carbon-14 by the action of cosmic rays.Click on the buttons to change the thickness of the metal: 3.Alpha particles would not be able to go through metal at all, gamma waves would go straight through regardless of the thickness.Different substances decay at different rates and so will last for different lengths of time.

Carbon-14 reacts identically to Carbon-12 and is rapidly oxidised to form (Carbon-14)Dioxide.

This is a slide and worksheet for radioactive dating and half life activity.