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  • Smart Learning for All

  • Topic: Speed of sound.

  • Why does sound travel faster in summer than in winter?

  • Wow.

  • That was an amazing trick.

  • The television switched on immediately after you clapped.

  • I know.

  • This is one of my favorite tricks.

  • Now, I bet you that the television will not switch on instantly after your clap.

  • This time I am going to prove you wrong.

  • See.

  • I told you.

  • I lost again.

  • Do you know why the sound took more time to reach the television?

  • This is because the speed of sound decreased.

  • Speed of sound depends on the temperature of the medium.

  • Higher the temperature of the medium, more will be the speed of sound and vice versa.

  • So, in this case, what do you think is the medium?

  • Are you kidding me?

  • I don't know.

  • No Problem.

  • I will tell you.

  • In this case, air is the medium.

  • During summer season, the temperature of air increases.

  • At higher temperature, the molecules of air have more kinetic energy.

  • Hence, they vibrate faster leading to increase in speed of sound.

  • Now, during winter season, the temperature of air decreases.

  • With the decrease in temperature, the kinetic energy of the molecules also decreases.

  • Hence, the molecules do not vibrate much.

  • As a result, the speed of sound decreases during winter season.

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Smart Learning for All

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