"Faster than sound" refers to the speed at which sound waves travel through a medium, typically air. This speed is approximately 343 meters per second (1,125 feet per second) at sea level and at room temperature. When an object moves faster than this speed, it is said to be traveling at supersonic speeds. One well-known example of supersonic travel is the Sonic Boom, which occurs when an object, such as an aircraft, breaks the sound barrier. This phenomenon creates a loud noise as the shock waves produced by the object compress and then release, resulting in a powerful sound wave that can be heard on the ground.