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Materials Required
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Shoe box,
Few pieces of thread,
Tissue paper,
Extra cardboard – optional,
A music player.
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Method
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- Tie some tissue paper on each piece of thread and tie them across the width of the shoe box.
- Make Sure to switch off the fans in the room before starting the experiment.
- Play loud music and hold the box facing the speaker.
- Observe what happens to the tissue paper on the threads.
- Next vary the volume and observe what happens to the tissue on the threads.
- Then change the type of music and also note what happens.
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What is Learnt
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The movement of the tissue paper varies with vibrations and kind of music, being more with higher vibrations and higher volume. Hence sound has vibrations.
This is a good example of conversion of sound energy to motion or mechanical energy.
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Conclusion
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The tissue paper attached to the thread moves, moving more with high vibration music and with increase of volume.
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Flash Cards