Across
- 3. the colour formed by adding red and green light
- 8. radiation with slightly lower frequency than red light
- 10. _____ rays have higher energy than x-rays.
- 12. an area of partial shadow formed by an extended light source
- 14. the kind of reflection produced by a rough surface
- 16. radiation with slightly shorter wavelengths than we can see
- 17. high energy radiation used in medical imaging
Down
- 1. _____ light is electromagnetic radiation we can see
- 2. the kind of light produced by hot objects
- 4. the distance from the crest of one wave to the crest of the next wave
- 5. radiation used in radar and some kinds of ovens
- 6. complete shadow
- 7. does not transmit any light
- 9. _____ waves have the longest wavelength of all the electromagnetic radiation we studied
- 11. the number of waves per second
- 13. the _____ model treats light as straight lines
- 15. the colour with the highest frequency
- 18. the colour with the longest wavelength