What can you say about sound in terms of physics?

Sound is a specific type of wave that takes the form of vibrations that travel through air, water, or any other material. From a human point of view, sound is different in that we perceive it. Sound is detected by our eardrums. When sound travels through the air as vibrations, those vibrations eventually make their way to our ears. When they do, they cause the eardrum to vibrate, which sends electrical signals to the human brain. Our brain perceives these electrical signals as sounds.