4. It is the only wave that is visible to the human eye. A. Microwave B. Radio wave C. Visible light D. X-ray 5. How will you compare the wavelength of x-ray and ultraviolet ray? A. X-ray has a longer wavelength. B. Ultraviolet has a shorter wavelength C. X-ray ray has a shorter wavelength. D. none of the above 6. What happens to the frequency from right to left of the EM spectrum? A. The frequency of the wave increases. B. The frequency of the wave decreases. C. The frequency of the wave increases, then decreases. D. The frequency of the wave decreases, then increases. 7. What happens to the wavelength from right to left of the EM spectrum? A. The wavelength gets longer. B. The wavelength gets shorter. C. The wavelength gets longer then becomes shorter. D. The wavelength gets shorter then becomes longer.
