I'm not sure how clouds are formed, but clouds know how to do it, and that's the important thing. Water vapor gets together in a cloud. When it is big enough to be called a drop, it does. Rain is saved up in cloud banks. It is so hot in some places that people there have to live in other places.
Mushrooms always grow in damp places, which is why they look like umbrellas.
Momentum is something you give a person when they go away. A monsoon is a French gentleman. To keep milk from turning sour, keep it in the cow. Some people can tell what time it is by looking at the sun, but I have never been able to make out the numbers. When planets run around and around in circles, we say they are orbiting.