Answer:
Albedo
Explanation:
Albedo means Whiteness.
It is the measure of how a certain amount of light which hits a surface is reflected without being absorbed.
Any substance that appears white reflects most of the light that hits it and has a high albedo while any substance which looks dark absorbs most of the light that hits it indicating a low albedo.
Earth has an albedo of about 30 percent, reflecting much of the sun's radiation back into space.
