Rank the forms of light from left to right in order of increasing energy. To rank items as equivalent, overlap them.
Options: gamma rays, X-rays, ultraviolet, visible light, infrared, radio waves.
Lowest energy.
(1.) radio waves.
(2.) infrared.
(3.) visible light.
(4.) ultraviolet.
(5.) X-rays.
(6.) gamma rays.
Highest energy.
Correct
Notice that the energy order is the same as the frequency order from Part B, which means it is opposite the wavelength order from Part A. The reason is that the energy of a photon of light is proportional to its frequency:
energy = Planck's constant × frequency