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If radiation collides with molecules in the air or in your body, it throws out of them electrons.By throwing out electrons you produce charged particles called ions. We are surrounded by background radiation all of the time!This sating all living things have radioactive carbon in them.Radiocarbon or Carbon dating gcsw a technique used by scientist to date bones, wood, paper and cloth.This is a slide and worksheet for radioactive dating and half life activity.The Slides are to be shown at the front and then each item is shown in turn and the pupils use their graphs to calculate the age of each item from the percentage of carbon found in them. take longer than you think, but keeps them engaged and there're questions to be answered in their books also.
As the rock gets older the proportion of lead increases.All living things therefore have carbon - 14 in them at the same amount which is present in the environment.All living things radioachive have carbon - 14 in them at the same amount which is present in the environment.The Carbon-14 within a living organism is continually decaying, but as the organism is continuously absorbing Carbon-14 throughout its life the ratio of Carbon-14 to Carbon-12 atoms in the organism is the same as the ratio in the atmosphere.Once an organism dies it stops taking in Carbon in any form.