Experiment to demonstrate the refraction of sound
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5 Terms
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Draw a diagram of this experiment
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Step 1
Set up apparatus as shown and turn on power
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Step 2
Introduce a CO2 filled balloon between Loundspeaker A and the microphone
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Result
The sound from loudspeaker B gets louder
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Explain why this experiment works
CO2 is denser than air and the CO2-filled balloon does to sound what a convex lens does to light (it focuses it) this is why sounds are clearer on a cold night
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