What is the electromagnetic spectrum used for?

 Astronomers use the entire electromagnetic spectrum to observe a variety of things. Radio waves and microwaves – the longest wavelengths and lowest energies of light – are used to peer inside dense interstellar clouds and track the motion of cold, dark gas

The electromagnetic spectrum is used for identifying what type a wave is. For example, a  wave with a very low frequency would be a radio wave, and a wave with a very high wavelength would be a gamma wave.

Let me know if this helps!

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )

increases it