| A | B |
|---|
| X rays are a type of | radiation |
| Radiation from the Sun is | electromagnetic radiation |
| Atoms emitting radiation are | radioactive |
| Naturally occurring radioactive nuclei | can emit three types of radiation |
| Alpha, Beta and Gamma are | types of radiation |
| Gamma radiation is a form of | electromagnetic radiaiton |
| When an unstable nucleus emits | radiation it undergoes radioactive decay |
| Atoms losing one or more electrons | ions |
| sunblock | decreases your exposure to radiation |
| Neutrons produced by nuclear fission | make a chain reaction |
| The smallest mass in which a chain reaction | can be sustained is the critical mass |
| Total number of protons and neutrons found in the nucleus | Mass Number |
| Total number of protons found in the nucleus | Atomic Number |
