Sound Waves Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Summary Test

Wavelength is the distance between matching points on a wave. 
This is sometimes called Lambda (represented by the Greek letter which looks like up upturned y), and is measured in meters (m). 
Imagine a boy playing swing ball. When he moves the ball up and down the wave travels along the rope to the pole. 
When he moves the ball slowly there is a large wavelength (Lambda). 
When he moves the ball quickly there is a small wavelength (Lambda).

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