Describe how carbon 14 is used as a dating method Chat for adult and teens

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Describe how carbon 14 is used as a dating method

Later called Ötzi the Iceman, small samples from his body were carbon dated by scientists.The results showed that Ötzi died over 5000 years ago, sometime between 33 BC. It is found in the air in carbon dioxide molecules.In contrast, radiocarbon forms continually today in the earth’s upper atmosphere.

When animals eat the plants, the carbon-14 enters their bodies.Materials that originally came from living things, such as wood and natural fibres, can be dated by measuring the amount of carbon-14 they contain.For example, in 1991, two hikers discovered a mummified man, preserved for centuries in the ice on an alpine mountain.Knowing the number of atoms that decayed in our sample over a month, we can calculate the radiocarbon decay rate.The standard way of expressing the decay rate is called the half-life.5 It’s defined as the time it takes half a given quantity of a radioactive element to decay.

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