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How do scientists use half lives in radiometric dating

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Age determinations can also be obtained from carbonate deposits such as calcite, dissolved carbon dioxide, and carbonates in ocean, lake, and groundwater sources.

Cosmic rays enter the earth's atmosphere in large numbers every day and when one collides with an atom in the atmosphere, it can create a secondary cosmic ray in the form of an energetic neutron.

As you learned in the previous page, carbon dating uses the half-life of Carbon-14 to find the approximate age of certain objects that are 40,000 years old or younger.

In the following section we are going to go more in-depth about carbon dating in order to help you get a better understanding of how it works.

Radioactive decay is a natural process and comes from the atomic nucleus becoming unstable and releasing bits and pieces.

These are released as radioactive particles (there are many types).

As the isotopes decay, they give off particles from their nucleus and become a different isotope.

This predictability allows scientists to measure the age of an object if they can work out how many radioactive atoms were originally present.

Half-life is the amount of time it takes for half of the parent isotopes to decay. In another 5,730 years, the organism will lose another half of the remaining C-14 isotopes.

This process continues over time, with the organism losing half of the remaining C-14 isotopes each 5,730 years.

Two situations where we can do this involve Potassium-40 atoms and Carbon-14 atoms.

All radioactive atoms decay to become a more stable kind of atom.