The electromagnetic spectrum is the whole spectrum of waves, ranging from low frequency to high frequency. Scientists use the electromagnetic spectrum to study stars, do X-rays, or treat certain illnesses.

Amplitude is the measurement of the amount of energy transferred by a wave

Frequency is the number of times an event repeats in a given unit of time

Wavelength is the distance between two points on a wave that are in the same phase. Radio waves have the longest wavelength. Gamma rays have the shortest wavelength.

If energy increases, wavelength decreases, if energy decreases, wavelength increases.

Gamma waves have the highest energy, and radio waves have the lowest energy.