Why are some clouds darker than others?
Rain clouds are gray instead of white because of their thickness, or height. That is, a cloud gets thicker and denser as it gathers more water droplets and ice crystals — the thicker it gets, the more light it scatters, resulting in less light penetrating all the way through i
Join Alexa Answers
Help make Alexa smarter and share your knowledge with the worldLEARN MORE