Virtual radioactive dating lab

This lesson can be used as an introduction to radioactivity.

Students should have familiarity with the scientific notation and the units milli, micro, and nano.

Radioactive dating is a method of dating rocks and minerals using radioactive isotopes.

This method is useful for igneous and metamorphic rocks, which cannot be dated by the stratigraphic correlation method used for sedimentary rocks. Some do not change with time and form stable isotopes (i.e.

This decay process leads to a more balanced nucleus and when the number of protons and neutrons balance, the atom becomes stable.

This radioactivity can be used for dating, since a radioactive 'parent' element decays into a stable 'daughter' element at a constant rate.

The activity is designed as an in-class competition between lab groups.

For geological purposes, this is taken as one year.

those that form during chemical reactions without breaking down).

The unstable or more commonly known radioactive isotopes break down by radioactive decay into other isotopes.

Percent Here Percent Here Screenshot of graph at 3 half-lives Screenshot of graph at 4 half-lives on link above and answer the questions as the animation plays.

After two half-lives (9 billion years), what percent of the original uranium remains? Amount of Uranium at 4.5 billion years__________ ANSWER 2.

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