Across
- 4. - Light produced by exciting atoms.
- 6. - Light used in microwave ovens and communication.
- 8. - Light with wavelengths longer than visible light.
- 9. - Light produced by ionizing gases.
- 10. - Light that can be seen by the human eye.
Down
- 1. - Long-wavelength light used for radio broadcasting.
- 2. - Very high-energy light with short wavelengths.
- 3. - Light with wavelengths shorter than visible light.
- 5. - High-energy light used for medical imaging.
- 7. - Light with a single wavelength and direction.