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The materials required to prove the activity that sound has energy |
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Answer» Answer: You NEED to use a balloon, a glass, a mobile phone and some salt or sand particles Explanation: Step 1: Cut the balloon in half............ Step 2: Place the phone in the glass and COVER the half balloon on the mouth of the glass............ Step 3: Then put some salt particles on the balloon which you put on the mouth of the cup before................ Step 4: Then ring the phone which is in the glass........... Step 5: The sand or salt particles on the half balloon START jumping..... This proves that sound has ENERGY |
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