| 1. Radio |
Energy emitted into the air from your boom box. |
| 2. Photon |
Electromagnetic radiation can be described in terms of a stream of these type of particles. |
| 3. Microwaves |
Energy from this will cook popcorn. |
| 4. Stars |
Large balls of gas that create and emit their own radiation. |
| 5. Infrared |
This type of radiation is normally felt as heat. |
| 6. Visible |
The part that our eye can see. |
| 7. Sun |
A source of ultraviolet radiation. |
| 8. Wavelength |
Distance between adjacent peaks in a series of periodic waves. |
| 9. Ultraviolet |
This radiation is abbreviated as UV. |
| 10. Second |
Unit of time |
| 11. X-rays |
A doctor uses these to look at your bones. |
| 12. Radiation |
Energy radiated in the form of waves. |
| 13. EM spectrum |
A name scientists give to the full range of types of radiation. |
| 14. Gamma rays |
Radioactive materials can emit these. |
| 15. Frequency |
Measured in cycles per second. |
