# How to find age using carbon dating

How many have lives have gone by? This rather complex formula shows you how to solve this puzzle using accepted scientific methods.

For older fossils, an isotope with a longer half-life should be used. Archaeologists use the exponential, radioactive decay of carbon 14 to estimate the death dates of organic material. That means this is how long it takes for half the nuclei to decay.

After years, if we start with a gram, we end up with half a gram. Other radioactive isotopes are also used to date fossils.

Math Central - mathcentral. In this section we will explore the use of carbon dating to determine the age of fossil remains.

Spend Money on a Graphing Calculator? This is a formula which helps you to date a fossil by its carbon. Find a number given Its percent How To: Since skeletons used to be living things we must use C as our isotope.

Solve percentages without a calculator How To: Therefore, organisms from a single-celled bacteria to the largest of the dinosaurs leave behind carbon-based remains.

The half-life for 14 C is approximately years, therefore the 14 C isotope is only useful for dating fossils up to about 50, years old. In the case of radiocarbon dating, the half-life of carbon 14 is 5, years.

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

Carbon is a key element in biologically important molecules. Multiply the Number of Half-lives by the length of each half-life.

Because its half-life is so long it is useful for dating the oldest rocks on Earth, but not very reliable for rocks under 10 million years old. The half-life of a radioactive isotope describes the amount of time that it takes half of the isotope in a sample to decay.

At this point, the overall amount of 14 C in the organism begins to decay exponentially.

Convert Fahrenheit to Celsius with a formula How To:

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