Final answer:
The term for all forms of energy that exist, including gamma rays, ultraviolet light, and radio waves, is the electromagnetic spectrum. Compton scattering, notably, made use of X-rays.
Step-by-step explanation:
The name given to all forms of energy that exist, including gamma rays, radio waves, ultraviolet light, and others, is the electromagnetic spectrum. The electromagnetic spectrum encompasses a wide range of electromagnetic waves, characterized by their wavelengths and frequencies, from the shortest waves like gamma rays to the longest waves like radio waves, each with its corresponding photon energy levels.
The correct answer to the question is (b) Electromagnetic spectrum.
Compton scattering specifically used X-rays, which is a type of electromagnetic radiation with higher energy than visible light but lower than gamma rays. This scattering effect was observed by Arthur Compton, for which he won the Nobel Prize in Physics in 1927. It is important to understand that the energy of a photon is directly related to its wavelength or frequency, with gamma rays carrying the most energy per photon and radio waves the least.