Curated OER
Half-life Worksheet
In this half-life worksheet, students determine how long it takes for a 100g sample of AU-198 to decay to 6.25g. Then they determine the half-life of a radioactive isotope if a 500.0g sample decays to 62.5g in 24.3 hours. Students also...
Curated OER
Demonstrating the Half-Life of a Radioactive Isotope
In this half-life activity, students use 100 pennies to simulate radioactive isotopes and half-life. They place the pennies in a box and shake the box. All pennies that turn up tails are removed from the box. They represent the isotopes...
Curated OER
Radioactivity Experiments
Students study the difference between types of ionizing radiation and how elements are transmuted. They determine that radiation is normal and surrounds us. They calculate the amounts of alpha, beta and gamma radiation emitted from a...
Curated OER
The Uses of Radiation
No visual aids, no activities, and no demonstrations accompany this plan. What you will find, is background information for a short lecture on the use of isoptopic radiation in the medical field and in our everyday lives. Should you...
Curated OER
Radioactive Half-Life
In this half-life worksheet, students determine how much of the radioactive isotopes will remain after a certain amount of time. This worksheet has 11 problems to solve.
CK-12 Foundation
Ck 12: Earth Science: Radioactive Decay as a Measure of Age
[Free Registration/Login may be required to access all resource tools.] An overview of radioactive decay.
CK-12 Foundation
Ck 12: Earth Science: Radioactive Decay as a Measure of Age
[Free Registration/Login may be required to access all resource tools.] An overview of radioactive decay.
Lawrence Berkeley National Laboratory
Berkeley Lab: Radioactive Dating
This site provides an overview of radioactive dating, a process used to determine the age of rocks and other materials.
Other
How to Date a Fossil
Radiometric dating, fission-track dating, and amino-acid dating are explained in this succinct site.