Question: what are the uses of the 7 electromagnetic waves?
Answer: Radio Waves: Instant Communication. ••• Radio waves are the lowest-frequency waves in the EM spectrum. ...  Microwaves: Data and Heat. ••• ...  Infrared Waves: Invisible Heat. ••• ...  Visible Light Rays. ••• ...  Ultraviolet Waves: Energetic Light. ••• ...  X-rays: Penetrating Radiation. ••• ...  Gamma Rays: Nuclear Energy. •••