The intensity of radiation peaks at one frequency and falls off above and below that frequency. The radiation is constant at all frequencies. D. Most of the radiation is trapped by our Earth's atmosphere. E. None of the above is correct. Answer B Some of the properties of an electromagnetic wave are listed below.
All light waves travel at the same speed in a vacuum.
These waves require some type of medium to travel through, just like sound waves do. The longest wavelengths have the lowest frequency. D. A and B are correct. E. A and C are correct. Because they have different absolute magnitudes.