1. They’re not weightless
2. Cirrus clouds are made of ice
3. Tiny droplets of water in the air rise with warm air. As they rise, they get cooler
4. Clouds are white because they reflect light from the sun. Gray clouds become so filled with water that they don't reflect light.
5. Cumulus clouds look like fluffy tufts of cotton floating in the sky.
6. Green clouds often mean a tornado is coming.
Hope this helps:)