Have you ever wondered how clouds make shapes?

Yes because

Explanation:

Clouds get their shapes from the air that surrounds them. ... Since clouds are made up of millions of tiny pieces of water, when they are really high up in the sky where the air is very cold, the water droplets freeze into floating ice crystals. When we observe these clouds way up in the sky, they look like wispy strands

a.) travels faster in solids because the particles are closer together.

air is a gas water is a liquid