Words of This Topic
- Sound: a form of energy produced by vibration that gives the ear the sensation of hearing.
- Source of sound: an object that gives out sound.
- Vibration: fast to and fro movement about a resting position.
- Mean position: the place where a particle sits when it is not vibrating.
- Medium: the solid, liquid or gas that carries the sound along.
- Longitudinal wave: a wave whose particles vibrate along the direction the wave travels.
- Mechanical wave: a wave that needs a medium in order to travel.
- Frequency, symbol \( f \), unit hertz (Hz).
- Time period, symbol \( T \), unit second.
- Wavelength, symbol \( \lambda \), unit metre (m).
- Amplitude, symbol \( a \), unit metre (m).
- Speed of sound, symbol \( v \), unit metre per second (m/s).
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