Where does a puddle go when it dries up?
Puddle's Sky Trip
Where does a puddle go when it dries up?

A puddle sits in a parking lot, calm and shiny, holding a little crooked piece of the sky. You come back an hour later and — poof — it's gone. No drain, no slurp, no footprints. So where on earth did it run off to?
Here's the secret: the puddle didn't sink, and it didn't soak. It flew. Bit by bit, the water turned into a gas you can't see, called water vapor, and drifted up into the air. Scientists call this disappearing act evaporation. It just means "becoming an invisible mist that floats away."
