Answer:
5) The wavelength of microwaves are much shorter compared to radio waves (sonar). Microwaves also have a shorter frequency.
6) Red has the longest wavelength (think infrared), and purple/violet has the shortest wavelength (think ultraviolet).
REFERENCE:
In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves. Microwaves (like the ones used in microwave ovens) are a subsection of the radio wave segment of the EM spectrum.
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