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Electromagnetic Waves/Spectrum
Review
1. List 2 properties of electromagnetic waves.
Electrical and magnetic
2. What is the speed of an electromagnetic wave equal to?
Wavelength X frequency
3. What is a photon?
A packet of light energy
4. Do electromagnetic waves use a medium to travel?
NO
5. What is polarized light?
Light that has passed through a polarizing filter
6. In a vacuum, all electromagnetic waves have the same what?
speed
7. Visible light has a higher frequency than which electromagnetic waves?
Infrared rays
8. What is the range of electromagnetic waves called?
Electromagnetic spectrum
9. Which electromagnetic waves have the highest frequency?
Gamma rays
10. What kind of electromagnetic waves do police officers use?
Radio waves
11. Visible light can be separated into various colors to form a what?
spectrum
12. What is transferred by electromagnetic waves?
Electromagnetic radiation
13. How much faster than sound are electromagnetic waves?
One million times faster
14. Which electromagnetic waves have the longest wavelengths and the
lowest frequencies?
Radio waves
15. What are the images made by an infrared camera called?
thermograms
16. Which EM wave produces vitamin D?
Ultraviolet rays