Physics P3 - Sound.

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How does sound get to our ears?

1. Sound waves are caused by vibrations, for example, if you are playing a guitar, the strings vibrate, this is where the sound begins.

2. After this, the particles bump into other particles next to them and so on. Imagine this as dominoes in a line, all falling down.

3. Finally, the particles reach our eardrum, then a message is sent to the brain which registers the movement of particles as sound.

What is amplitude, frequency, wavelength and waveform?

  • Amplitude is the distance from half way down the wave to the bottom/top. It is half of the full length of the wave. This represents the loudness of the wave. A smaller…




Thanks, this helped a lot!

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