Across
- 2. when light bumps into tiny particles of matter and spreads out in all directions
- 5. waves used to locate underwater objects
- 8. ultrasound waves sent out and reflected back to identify the location of objects
- 13. to be lit by another source of light
- 14. does not let light pass through
- 15. producing light without heat
Down
- 1. light with the longest wavelength
- 3. transmits light and scatters it
- 4. all the wavelengths of light the human eye can detect
- 6. when light transfers it’s energy to matter
- 7. transmits light and does not scatter it
- 9. light that people can see
- 10. when light passes through matter
- 11. light with wavelengths shorter than visible light
- 12. the use of reflected ultrasound waves to “see” inside the body
- 13. light emitted due to extremely high temperatures