They are actually a collection of billions and billions of tiny water droplets and ice crystals.
Cumulus clouds are puffy white clouds that usually have a flat base and they can bring bad weather.
They look like cotton balls with a flat bottom. Cirrus clouds look like a feather and they are way up in the sky. Stratus clouds hang way down low in the sky and if they are at ground level then they are called fog. They look like gray blankets. Students will be able to identify the definition of clouds.