Other Lessons in This Series 1. Once all groups finish, each group records their info on the class decay table on the board and we calculate the averages of the class. Explain in terms of the statistical nature of radioactive decay. Half-Life and Activity Data from the appendices and the periodic table may be needed for these problems. Arrange the following according to their ability to act as radiation shields, with the best first and worst last. Neutrinos are experimentally determined to have an extremely small mass. Poses special problems because its daughter is a radioactive noble gas.
What is the mass of the 48Ca in the sample?
Radioactive Decay: A Sweet Simulation of a Half-life
If you count ten and weigh them, then multiply by 8, you will know how many grams of candy to weigh out for each group. Students will understand how scientists use half-lives to date the age of rocks. Click More Information below. A student measures the radioactivity of this source with a Geiger counter and observes counts per minute. After one half-life, half of the nuclei will have disintegrated, leaving 50 nuclei. Uranium is very dense and makes good counter weights for aircraft.