Why does wind blow?
Air on the Move
Why does wind blow?
You've felt it ruffle your hair, push against your jacket, steal your hat. Wind seems to come out of nowhere — invisible, unpredictable, always on the move. But here's the thing: wind isn't magic. It's air that decided it absolutely had to be somewhere else, right now.
Air, believe it or not, has weight. The whole atmosphere pressing down on you right now weighs about the same as a small car sitting on your shoulders — you just don't notice because you've lived under that weight your whole life. When air warms up, though, something shifts. Warm air is lighter than cold air, so it rises like a hot-air balloon.
