Muffling_Sound

Muffling_Sound - Which material is best for muffling sound...

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Which material is best for muffling sound? Miss M Gheewala
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Professor Big-Hair and Professor Bee-Hive have a problem. They can’t do any work, because their alarm clock is constantly ringing and the off switch is broken. Professor Big-hair thinks if they wrap it in a sheet, they can muffle the sound so they won’t be able to hear it. Professor Beehive thinks they should do an experiment with different materials , to see which one will muffle the sound best . She says they should wrap the alarm clock in each of the materials, and see if they can still hear it ringing.
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Which material do you think will be good at muffling the sound? Fill in the gaps in these sentences about the experiment. Choose the right words from the boxes at the bottom. The professors should wrap the _______________ in each ___________ they are testing. They should make sure they use ________________ number of layers of each material, and they leave ______________ gaps when they wrap up the alarm clock.
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When you do an experiment, it’s important to make sure that it’s a fair test .
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