What is condensation?

Condensation is when water vapor turns back into liquid water, just like how a cold drink makes your glasses fog up.

Imagine you have a glass of ice-cold lemonade on a hot day. The air around the glass is warm, and it holds lots of invisible water vapor, kind of like steam you can’t see. But when that warm air hits the cold glass, it gets confused and loses some of its water vapor, which then becomes tiny drops of liquid water on the outside of the glass. That’s condensation in action!

When something is cold, it can't hold as much water vapor as when it's warm. So the extra water vapor has to leave, and it turns into drops of liquid water, just like how your glasses fog up.

Think about a bathroom mirror after you take a hot shower. The warm air in the room is full of water vapor, but when it hits the cold mirror, it can't hold all that water vapor anymore. That’s why the mirror gets all foggy, it's condensation!