1. Chapter 17 Vocabulary
"The Electromagnetic
Spectrum"

2. electromagnetic waves with higher frequencies and shorter wavelengths than radio waves but lower than visible light

3. INFRARED
RAY

4. a system of detecting reflected radio waves

5. RADAR

6. electromagnetic radiation that can be seen with the unaided eye

7. VISIBLE
LIGHT

8. method of transmitting radio signals by changing the amplitude of the waves

9. AMPLITUDE
MODULATION

10. lights that glow when an electric current causes ultraviolet waves to strike a coating inside a tube

11. FLUORESCENT
LIGHTS

12. electromagnetic waves with frequencies higher than visible light, but lower than X-rays

13. ULTRAVIOLET
LIGHT

14. electromagnetic waves with higher frequencies that ultraviolet rays, but shorter than gamma rays

15. X-RAYS

16. energy that travels through space in the form of electromagnetic waves

17. ELECTROMAGNETIC
RADIATION

18. a tiny particle or packet of light energy

19. PHOTON

20. lights that glow when a filament inside them gets hot

21. INCANDESCENT
LIGHT

22. method of transmitting radio signals by changing the frequency of the waves

23. FREQUENCY
MODULATION

24. radio waves with the shortest wavelengths and highest frequencies

25. GAMMA
RAYS

26. electromagnetic waves with the longest wavelengths and lowest frequencies

27. RADIO
WAVES

28. radio waves with the shortest wavelengths and highest frequencies

29. MICROWAVES

30. the range of electromagnetic waves placed in a certain order

31. ELECTROMAGNETIC
SPECTRUM