Competency #9
Compare and contrast the nature of sound and light
Learning Objective d
- d.Differentiate between electromagnetic waves (including light) and sound waves
Question
Write down your answer to the following question:
In old spaghetti westerns, villains were frequently seen holding their ears to train tracks to find out if the train was coming. Did this really work?
- Not really, by the time you could hear the train coming in the rails you could hear it coming through the air.
- No, sound can't travel through train tracks.
- Yes, the sound travels faster through the train tracks than through the air.
- Of course not, it was just a theatrical trick to let the audience know a train was coming.
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