We learned that sound is caused by vibrations which
travel through the air. Vibrations can be made by
blowing, banging and even plucking a string! We
felt the vibrations by talking into a balloon whilst
our partner held it up to their ears. We also made
some very strange sounds using different sized straws.
We cut the end of the straw in a point and put it in
our mouths and teacher told us to blow hard!
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