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Senses Experiment - Sound
 
Sound Through a Tube
Materials you will need:
Materials you will need:

• A Ticking Watch
• A Cardboard Tube (Paper Towel Tube)

 
Steps

1.  Hold the watch next to your ear.
2.  Move it away until you cannot hear the ticking.
3.  How far do you have to move it?
4.  Place one end of the tube against your ear.
5.  Place the face of the watch at the other end of the tube.


6.  Can you hear the ticking?

When the sound vibrations are trapped in the tube they do not lose much energy.  So you can hear the watch ticking through the tube.  When the watch is away from your ear, the sound vibrations spread out and lose energy.  This is why you don’t hear the watch ticking.

Check out how Sounds and Vibrations work on our Science Facts page below.

 
 
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