What is sound Sound: a disturbance of (air) molecules by some kind of movement. These disturbances are called sound waves.
{"Image DocumentName": "What is sound?Sound: a disturbance of (air) molecules by some kind of movement. These disturbances are called sound waves.", "Image ImageDescription": "Sound waves cause molecules to move back and forth, bumping into one another. Eventually this disturbance travels to your ear, causing your ear drum to vibrate. Your brain perceives this as sound. We tend to think of sound as something produced by our voices or by an instrument or something else. But a good way to understand that sound is produced by a disturbance of air molecules is to wave your hand back and forth beside your ear. You can hear (and feel) the disturbance in the air. 6.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}