Describe carbon dating

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A child mummy is found high in the Andes and the archaeologist says the child lived more than 2,000 years ago.

How do scientists know how old an object or human remains are?

Archaeologists use the exponential, radioactive decay of carbon 14 to estimate the death dates of organic material.

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Before we get into the details of how radiometric dating methods are used, we need to review some preliminary concepts from chemistry.

We will deal with carbon dating first and then with the other dating methods.

Carbon has unique properties that are essential for life on Earth.

So, we have a “clock” which starts ticking the moment something dies.

Obviously, this works only for things which were once living.

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