1. Evaporation: Water on Earth's surface (oceans, lakes, rivers, even puddles) gets heated by the sun. As it heats up, it turns into water vapor, which is lighter than air and rises.
2. Cooling and Condensation: As the water vapor rises, it encounters cooler air. This cooling causes the vapor to condense, meaning it changes back into tiny water droplets or ice crystals.
3. Cloud Formation: These water droplets or ice crystals clump together and form clouds. Different types of clouds form based on the temperature and air movement.
4. Air Currents: Winds and air currents move these clouds around the sky.
Think of it like this: Imagine you're boiling a pot of water. As the water boils, steam (water vapor) rises. If you hold a cold plate over the steam, the vapor cools down and condenses, forming tiny water droplets on the plate. That's kind of like how clouds form in the sky!
There's a lot more to it, but that's the basic idea. Clouds are a fascinating and ever-changing part of our atmosphere.