To rank the types of electromagnetic radiation by frequency from lowest to highest:
1. Radio waves - These have the lowest frequency among the options given.
2. Microwaves - Next in line, with a higher frequency than radio waves.
3. Infrared rays - Followed by infrared rays, which have a higher frequency than microwaves.
4. Visible light - Visible light falls in the middle of the spectrum in terms of frequency.
5. Ultraviolet rays - Have a higher frequency than visible light.
6. X-rays - X-rays have even higher frequencies than ultraviolet rays.
7. Gamma rays - These have the highest frequency among the options provided.
Remember, in the electromagnetic spectrum, frequency and wavelength are inversely proportional, meaning higher frequency corresponds to shorter wavelength.
