Final answer:
The correct ranking of the electromagnetic waves by wavelength is: radio waves, microwaves, infrared waves, visible light, ultraviolet rays, X-rays, gamma rays.
Step-by-step explanation:
The correct ranking of the electromagnetic waves by wavelength from longest to shortest is as follows:
- Radio waves
- Microwaves
- Infrared waves
- Visible light
- Ultraviolet rays
- X-rays
- Gamma rays
Radio waves have the longest wavelength, while gamma rays have the shortest wavelength.
This ordering is based on the electromagnetic spectrum, which encompasses a range of electromagnetic waves characterized by their wavelengths or frequencies.