How come can we hear the sound of the wind?
　 　 　
No doubt you have heard howling sounds on days when the wind is blowing hard. Those must be the sounds of the wind, but where exactly do they come from? You can hear the wind because it makes swirls of air. Strong winds split into different air streams whenever they run into a wall or power line. These air streams curl around the object they hit and spin. This spinning makes swirls of air. These swirls keep forming and disappearing as long as the wind blows. The swirls that form and disappear in this way create air vibrations that make the howling sounds.