Correct: E.S. does not need a medium , E.S. arranged by frequency & wavelength, E.S. can travel through a vacuum, Gamma is Highest frequency, Visible light is only a SMALL portion, Gamma rays can treat cancer, X-rays scan luggage, Radio Waves= Lowest frequency, E.S. travels @ speed of light, UV has higher frequency than microwaves, Radiant Light travels in a straight line, Incorrect: Visible light requires a medium, E.S is arranged by brightness, Gamma waves have long wavelengths, Radio waves have high frequencies, infrared rays scan luggage, EM waves travel at different speeds, E.S. has all the SAME WAVELENGTH, E.S. travel @ speed of sound, Microwaves have higher frequencies than x rays, Radio waves can cause cancer,

Electromagnetic Spectrum

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