Monday, 28 November 2016

Creating sound and stopping it!

This week we have made string telephones.

We had great fun testing them out!

We found rhat sound travels along the string and the cans amplify the sound. If someone holds the string the vibration is blocked and the sound can't get through. If the string is slack it can't vibrate and again the phone won't work.

We also found the bigger the cans the better the sound!

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