Explanation : The electromagnetic spectrum, arranged from highest energy to lowest, are gamma rays, X-rays, ultraviolet light, visible light, infrared light. Microwaves, and radio waves. The above radiation is made up of a stream of photons - particles without mass that move in a wave pattern, all at the same speed - the speed of light. Each photon contains a certain amount of energy. The only difference between the parts of the electromagnetic spectrum is the amount of energy the photons carry. Radio waves have the least energy, and gamma rays have the maximum energy. ....Read more