Fire Crackles!
Crackling Noise Experiment:
NO WAY are we going to experiment with fire! The picture here is linked to the sound of
fire we recorded: if your computer does sound, click on it! Listen carefully.
You should
hear a general roar: that's the air rushing through, we think. You should also hear
some sharp crackling sounds. We think that's when a big pocket of gas explodes, but
we really don't know.
Like the sound of popcorn popping, the crackles
in the fire happen at random times, with no pattern. Notice that some of the crackles are
soft, and others are quite loud. The sounds come with random sizes.
Crackling noise happens when lots of short sounds come at random times, with some
sounds much louder than other sounds.
Lots of other things crackle! Let's try making crackling noises from
Rice
KrispiesTM
and by crumpling paper.
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