Multiple choice

The percentage of radiant energy reflected back by a surface is called

  1. albedo

  2. greenhouse efffect

  3. insolation

  4. refraction

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Albedo is the measure of the reflectivity of a surface, defined as the percentage of incident solar radiation that is reflected back into space. Surfaces like fresh snow have a very high albedo, while dark surfaces like asphalt have a low albedo.