"5-3 Light and EM Spectrum": HTML5 Crossword

Across

3. A space where no particles of matter exist (6)
5. three colors of light (RGB) which can be mixed to produce all possible colors by color addition (7,6)
10. a disturbance that transfers energy through a field and does not require a medium (15,4)
11. Determined by the intensity of the electromagnetic radiation (10)
12. a particle of light ("packets of energy") (6)
13. three colors of substances (CMY) which can be mixed to produce all possible colors by color subtraction (7,8)
16. The range of all EM frequencies (2,8)
17. Energy that moves in the form of EM waves (9)
18. the part of the EM spectrum that is just above the frequency of violet light (11)
19. A wave that moves the medium in a direction perpendicular to the direction in which the wave travels (10)

Down

1. electrons and light can behave as both a wave and a particle (7,2,5)
2. Determined by wavelength/frequency of the electromagnetic radiation (5)
4. EM waves that are used in radar and cell phones (10)
6. the part of the EM spectrum that human eyes can see (7)
7. A form of energy that can travel through space. (15)
8. The emission of electrons from a metal when light shines on the metal (13,6)
9. EM waves that have the shortest wavelengths, the highest frequencies, and the highest energies (5,4)
14. EM waves that have the longest wavelengths, the lowest frequencies, and the lowest energies (5,5)
15. the part of the EM spectrum that is just below the frequency of red light (8)