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GCSE Combined Science · key term
A substance through which a wave travels, such as air, water or glass.
Used by AQA and Edexcel
Specification 6.6.1.1, 6.6.2.2 · Paper 6
The material through which a wave travels, such as water, air or a rope.
Revise: Transverse and Longitudinal WavesWater ripples and sound waves travel through a medium: the material carrying the disturbance. For ripples, this is water; for sound in air, it is air.
A substance or material through which a wave travels, such as air, water or glass.
Do not say that the medium does not move at all. Its particles oscillate; they are not carried from the source to the receiver.
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Paper 5, Paper 6
Revise: Refraction and wavelength-dependent interactionsA substance through which a wave travels is called a medium. When a wave crosses a boundary into a medium where its speed is different, it undergoes refraction. If it approaches the boundary at an angle, its direction changes too.