Answer:
The electromagnetic spectrum includes, from longest wavelength to shortest:
- radio waves
- microwaves
- infrared
- optical
- ultraviolet
- X-rays
- gamma-rays.
When you listen to the radio, watch TV, or cook dinner in a microwave oven, you are using electromagnetic waves.
Radio waves, television waves, and microwaves are all types of electromagnetic waves. They only differ from each other in wavelength. Wavelength is the distance between one wave crest to the next.
Waves in the electromagnetic spectrum vary in size from very long radio waves the size of buildings, to very short gamma-rays smaller than the size of the nucleus of an atom.
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