First there is the radiation in the soils and rocks, called primordial or terrestrial.
Then there is radiation that comes from space, called cosmic or cosmogenic.
This is a slide and worksheet for radioactive dating and half life activity.
The Slides are to be shown at the front and then each item is shown in turn and the pupils use their graphs to calculate the age of each item from the percentage of carbon found in them. take longer than you think, but keeps them engaged and there're questions to be answered in their books also.
You have probably heard (and used) many of the following terms: All of these terms are related by the fact that they all have something to do with nuclear elements, either natural or man-made.
Students will answer comprehension questions and solve word problems using a table with information about the half-lives of radioactive elements. This process involves measuring the rate of decay of radioactive isotopes.