What are waves?
1 mark · EasyWhen you shout across a field, your friend on the other side hears you. Has any of your breath (the air you breathed out) travelled to your friend? Explain briefly.
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No, the air does not travel that far; only the sound wave (energy) travels.
Also accept: No, only energy travels, not the air from your breath; No, the air stays where it is; only the wave travels
Common mistakes: Yes, your breath reaches your friend
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Marking points
B1 · 1 mark · States that only sound/energy travels, not the air itself.
Worked solution
No, the air itself does not travel to your friend. The sound energy travels as a wave through the air.