P1 Waves

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Waves are vibrations that transfer energy from place to place without matter being transferred.

Some waves must travel through a substance. The substance is known as the medium and it can be a solid, liquid or gas. This applies to sound waves and siesmic waves. 

Although they may be able to travel through a medium, they do not have to. Waves such as visible light, infrared rays, microwaves and other electromagnetic radiation are like this.

Amplitude

The amplitude is measured as the vertical distance from the x-axis to the top of a peak. The wavelength is measured as the distance between two consecutive peaks or two consecutive troughs. (http://a.files.bbci.co.uk/bam/live/content/zy6gd2p/medium)

Wavelength

The wavelenth of a wave is the distance between one point of a wave and the same point on the next wave. It does not matter where you measure it, aslong as it is measured on the same point of each wave.

Frequency

The frequency of a wave is the number of waves produced each second. It

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