Half life radiometric dating

The element is defined by the number of protons present in the nucleus.

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The decay of rubidium-87 into strontium-87 can also be used for dating.Skills: -critical thinking -data analysis -questioning -graphing and data collecting Vocab Words: 1. This activity can be adapted for older students, but is used in an 8th grade earth science classroom.Class size can vary, but activity should be done in groups of 2-3.Clair Patterson developed the uranium-lead method in 1948.Potassium-argon dating is another kind of radioactive dating. Potassium-containing minerals are tested to find the amount of argon-40 and then to calculate the time that has passed since the mineral cooled to about 300 degrees.

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