A sound wave is a vibration that travels through a solid, liquid or gas such as the air or water. A loud sound has a large amplitude, a high pitched sound has a high frequency. Musicians and ...

Excuse me. Could you keep the noise down please? I'm trying to do an important talk. Builder: Well yeah alright mate but I've got to get this fixed, you know what I mean? Scientist: Sounds are of ...

Alarm clocks are meant to wake us up, so it's reasonable to assume a louder ... consists of all audible sound frequencies at ...