| A | B |
|---|
| Rad | A unit of absorbed energy |
| Rem | A unit of radiation based on potential damage |
| Alpha decay | Emission of a helium nucleus |
| Gamma | High energy electromagnetic radiation |
| Beta plus decay | Occurs when a proton is converted to a neutron |
| Beta minus decay | Occurs when a neutron is converted to a proton |
| Radon gas | A harmful radioactive gas that is usually found in the basement of buildings |
| Radioactive tracer | A minute amount of radioactive material that is used to diagnose problems |
| Strong nuclear force | Holds nucleons together in the nucleus |
| Lethal dose of radiation | 500 rem |
| Diagnostic X-ray dose | 40 mrem |
| Nuclear power plant dose | less than 1 mrem |
