Question

What happens when dark clouds gather in the sky
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Answer 1

Answer:

It's pretty well-known that most clouds are white, while rain clouds are usually a darker shade of gray. ... Unlike atmospheric particles that scatter more blue light than other colors (making the sky blue), the tiny cloud particles equally scatter all colors of light, which together make up white light

Answer 2

Explanation:

Often times when we look at the clouds they are white but before a storm you may notice that the clouds will get darker or more gray and dreary.

Clouds form when the air close to the ground warms it will begin to rise and within that rising air it contains water vapor. As the air rises it cools and the water vapor within the rising air will condense onto dust particles in the air. The water vapor or ice crystals coalesce, or come together, to form clouds.

The particles in the atmosphere scatter more blue light than other colors which is why the sky appears blue but the small particles of clouds, scatter all the colors of light equally, which make up white light.

So the gray hue is all about how thick the clouds are and how high up they are. The larger the water drops the more gray and the droplets are the biggest right before they fall as rain or snow. This is because light gets absorbed versus being scattered, which means less light getting through.