What is needed to do radiometric dating

25-Oct-2019 14:38

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This also made for rapid heating of the earth interior (cool to start with).

Furthermore, there is evidence that the main radioactive elements were concentrated in a layer low in the mantle and came to the surface progressively after that.

It wasn't until well into the 20th century that enough information had accumulated about the rate of radioactive decay that the age of rocks and fossils in number of years could be determined through radiometric age dating.

This activity on determining age of rocks and fossils is intended for 8th or 9th grade students.

Radiometric dating or radioactive dating is a technique used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they formed.

The method compares the abundance of a naturally occurring radioactive isotope within the material and the abundance of its decay products, which form at a known constant rate of decay.

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Different methods of radiometric dating vary in the timescale over which they are accurate and the materials to which they can be applied.2) To familiarize students with the concept of half-life in radioactive decay.