Picture a raindrop. You probably imagine a teardrop shape, round at the bottom with a pointy tip on top. That's how raindrops look in cartoons and on weather maps. But real raindrops don't look like that at all!
Raindrops start way up in the clouds, where water gathers on tiny bits of dust and smoke. Water likes to stick to itself, sort of like it has a stretchy skin. That pull keeps very small drops shaped like tiny round balls.
Then the drops start falling, and things get squishy. As a drop zooms down, air pushes up hard against its bottom and flattens it out. The top stays nice and curved. So a bigger raindrop ends up looking like the top half of a hamburger bun: a round dome on top, flat on the bottom. Rainbun, anyone?
Here's another wow. Raindrops bump into each other as they fall and join together into bigger drops. But they can't grow forever! Scientists say a drop that gets too big starts to stretch into a shape a bit like a parachute. Then it splits apart into smaller drops.
Scientists actually care about raindrop shapes. Flatter, heavier drops can mean heavier rain, and that helps them measure how much rain is falling around the world.
Next time it rains, ask your kid: If raindrops are really shaped like buns, what do you think we should call them?
