Clouds sometimes look like gobs of whipped cream in the sky. Sometimes they look like soft feathers. But what are clouds?
Clouds are billions and billions of tiny drops of water or ice crystals clustered together. Some clouds are all water, some are all ice, and some are a mixture.
You might think the water drops and ice crystals would be so heavy they would fall to the ground. But they are so tiny that the air holds them up, and breezes keep them floating in the air.
The water that makes clouds comes from the earth. Every day, the heat of the sun dries up tonnes of water from everywhere on the earth. All this water is turned into water vapour, which is water in the form of gas. This gas floats up into the air. But as it rises higher and higher, it begins to cool. When it cools enough, it turns back into water or ice. Then, tiny drops form around tiny, tiny bits of dust in the air. These drops make up the clouds.