Question

why does the sky some times appear white​

Answer 1

Explanation:

. It acts as a scattering center for light other frequencies which are lower than the frequency of blue light. In a hot day due to rise in temperature, water vapor into the atmosphere which leads to abundant presence of water molecules in atmosphere. These water molecules scatter the colors of other frequencies (other than blue). All such colors of other frequencies reaches our eye and white color appeared to us.

Answer 2

Explanation:

Clouds are white because light from the Sun is 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.