Question

1. list all the members of the electromagnetic spectrum (em spectrum) in order of decreasing (getting shorter and shorter) wavelength.

Explanation:

The electromagnetic spectrum includes radio waves, microwaves, infrared, visible light, ultraviolet, X - rays, and gamma rays. Wavelength decreases in this order as per electromagnetic wave theory.

Answer:

1. Radio waves
2. Microwaves
3. Infrared
4. Visible light
5. Ultraviolet
6. X - rays
7. Gamma rays