Low frequency
vacuum
yellow
violet
wavelengths
3 X 10⁸ m/s
2 X 10⁸ m/s
increases
decreases
radio waves
red
higher
lower
infrared
ultraviolet radiation
frequencies

1. An electromagnetic wave with a long wavelength has_______and can travel in______

2. The visible spectrum of light as seen by the human eye the lowest frequency appears______ and the highest frequency appears_______

3. Radio waves, visible light, and r-rays are examples of electromagnetic waves that always differ from each other in______ and______

4. Violet light has a shorter wavelength than yellow light. Violet light has a_________frequency than yellow light.

5. Red light and green light both travel at the speed of light________ they also travel through a ________.

6. As the wavelength gets shorter, the frequency and the energy_____________.

7. For all electromagnetic waves, the greater the frequency, the small the __________.

8. Number of cycles a wave completes in one second; expressed in Hertz.__________.

9. Microwaves have smaller wavelengths than __________.

10. An electromagnetic radiation lies just beyond the violet end of the visible spectrum. ​