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# Carbon 14 decay dating

How do scientists know how old an object or human remains are?What methods do they use and how do these methods work?

The stable form of carbon is carbon 12 and the radioactive isotope carbon 14 decays over time into nitrogen 14 and other particles.

Carbon-14 has a half-life of 5,730 ± 40 years—, half the amount of the radioisotope present at any given time will undergo spontaneous disintegration during the succeeding 5,730 years.

## Carbon 14 decay dating comments

• Carbon-14 - Wikipedia

## paulette60

Plants fix atmospheric carbon during photosynthesis, so the level of 14C in plants and animals when they die approximately equals the level of 14C in the atmosphere at that time. However, it decreases thereafter from radioactive decay, allowing the date of death or fixation to be.…
• Carbon-14 Dating - edu

## paulette60

All organic material has decaying Carbon-14 in it. However, plants and animals that are still alive constantly replace the supply of carbon in their systems and so the amount of Carbon-14 in the system stays almost constant. Once a plant or animal dies the Carbon is no longer being regenerated and so the Carbon-14 starts.…
• Carbon-14 dating scientific technology

## paulette60

Feb 9, 2018. Carbon-14 dating, also called radiocarbon dating, method of age determination that depends upon the decay to nitrogen of radiocarbon carbon-14. Carbon-14 is continually formed in nature by the interaction of neutrons with nitrogen-14 in the Earth's atmosphere; the neutrons required for this reaction are.…
• Carbon 14 dating 1 video Khan Academy

## paulette60

If the carbon14 used to date an organism, let's say an elephant is derived mainly from the plants ingested, and the elephant is dated by comparing it's ratio of carbon atoms to another elephant's ratio. One can simply weigh a sample of an element and count the decays as they occur to compute the half-life of that element.…
• Carbon 14 Dating - Math Central

## paulette60

Archaeologists use the exponential, radioactive decay of carbon 14 to estimate the death dates of organic material. The stable form of carbon is carbon 12 and the radioactive isotope carbon 14 decays over time into nitrogen 14 and other particles. Carbon is naturally in all living organisms and is replenished in the tissues.…
• How Carbon-14 Dating Works HowStuffWorks

## paulette60

Carbon-14 dating is something that you hear about in the news all the time. Find out how carbon-14 dating works and why carbon-14 dating is so accurate!…