The hero of a western movie listens for an oncoming train by putting his ear to the track. Why does this method give an earlier warning of the approach of a train than just listening in the usual way?

Because frequency if sound is more inside the iron tracks

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Sound travels faster in solids

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Because it looks cool

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None of these

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Solution

The correct option is B
Sound travels faster in solids

Sound travels faster in solids than in gases - so listening at an iron tracks gives you earlier warning of train approaching!

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Similar questions

We can easily hear the sound of an approaching train by putting your ear on the track well before you could hear its sound in the air. Why?

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