An electromagnetic wave is made up of an (1) electric field and magnetic field. (2) Electromagnetic spectrum shows the entire range of electromagnetic waves arranged in order of increasing frequency and decreasing (3) wavelength. Different electromagnetic waves carry different amounts of energy. The amount of energy carried by an electromagnetic wave depends on the wavelength: the shorter the wavelength, the (4) higher its energy. Wavelength and frequency are linked properties of a wave: the (5) shorter the wavelength, the higher its frequency. So, frequency also tells you about the energy of the wave: the higher its frequency, the (6) higher its energy. All the electromagnetic waves in the electromagnetic spectrum travel at a speed of (7) 3 x 10⁸ m/s.
