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.
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.
The activity is designed as an in-class competition between lab groups.
Answer key available to classroom instructors with verifiable email addresses.
This radioactivity can be used for dating, since a radioactive 'parent' element decays into a stable 'daughter' element at a constant rate.
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.
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.