Why Clouds Appear White?

As light passes through a cloud, it interacts with the water droplets, which are much bigger than the atmospheric particles that exist in the sky. ... These scatter all colours almost equally meaning that the sunlight continues to remain white and so making the clouds appear white against the background of the blue sky.

Why do clouds look white and fluffy?

While these fluffy-white clouds look like soft pillows of cotton, they are actually composed of small water droplets. ... As the sun's light hits the clouds' small water droplets, the entire visible spectrum scatters making clouds appear white.

What do white clouds reflect?

A. When clouds are white (and many are not), “it's because light from the sun is white, a combination of all the colors of the rainbow,” said Michael Kaufman, professor of physics and astronomy at San Jose State University in California. As light moves through the clouds, it is dispersed by water droplets.