Across
- 4. An image that shows regions of different temperatures in different colors.
- 7. The complete range of electromagnetic waves places in order of increasing frequency.
- 8. Electromagnetic waves with the shortest wavelengths and highest frequencies.
- 10. Radio waves with the shortest wavelengths and highest frequencies.
- 13. Word used to describe an object that can be seen because it reflects light.
- 14. Light that vibrates in only one direction.
- 16. Electromagnetic waves with wavelengths shorter than visible light.
- 17. Electromagnetic waves that are visible to the naked eye.
- 19. An instrument used to view the different colors of light produced by different light sources.
- 20. Electromagnetic waves with wavelengths shorter than ultraviolet rays.
Down
- 1. The ejection of electrons from a substance when light is shined on it.
- 2. Incandescent light bulb containing a tungsten filament and a halogen gas.
- 3. Light bulb that glows when a filament inside gets white hot.
- 5. Transverse waves that transfer electrical and magnetic energy.
- 6. The energy transferred through space by electromagnetic waves.
- 9. Electromagnetic waves with wavelengths shorter than those of radio waves.
- 11. Electromagnetic waves with the longest wavelengths and lowest frequencies.
- 12. A tiny particle or packet of light energy.
- 15. Word used to describe an object that can be seen because it emits light.
- 18. A system that uses reflected radio waves to detect objects and measure their distance and speed.