Carbon dating activities

One assumption is that the global levels of carbon 14 (also called radiocarbon) in the atmosphere has not changed over time.

Other scientists collected samples from cooled lava flows from Mt Ngauruhoe, in New Zealand.Radiocarbon’s entry into the global carbon cycle starts in the atmosphere where it is formed by the interaction of neutrons produced by cosmic rays with nitrogen atoms.The carbon 14 produced reacts with oxygen atoms in the atmosphere to form carbon dioxide.Even many archaeologists don’t think ‘carbon dating’ is completely accurate all the time.When these (and other) problems are then taken into account, a scientist can interpret the result of the carbon dating within a Biblical timeframe, but even so, these results can not be used to the age of once-living things.

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Some elements (we’ll call them ‘A’) in the lava are radioactive, which means that they change into other elements (we’ll call these ‘B’).

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