Science experiment:
Question: What will happen to the sound if I cut the straw shorter and blow through it?
Links to research about Sound:
Hypothesis: (What do you think will happen?) e.g. I think that the shorter you cut the straw the higher the sound gets.
Materials needed:
All you need is a straw and scissors.
Experiment (procedure):
e.g. Step 1 - Crease straw 2-3 cm long on one end.
Step 2 - Cut a triangle shape at the end of the straw and blow into cut end.
Step 3 - Listen to the sound it makes.
Step 4 - Cut the straw shorter.
Step 5 - Blow on cut end.
Data (What happened?)
Straw Length:
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Results:
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Long - 15 cm
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Makes a Sound
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Shorter - 10 cm
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Sound was higher
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Short - 5 cm
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Sound was more high pitched.
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Record:
I Cut the Straw shorter and it was high not low.
I Cut it a bit shorter and it was a bit higher than before.
I Cut it even shorter and it was higher than the other ones I have blown.
Observations:
When you cut the straw shorter the sound of the straw when you blow it gets higher. When it is long the sound was low but when I cut the straw down the noise was higher. At 15 cm it made a sound. At 10 cm the sound a bit higher. But at 5 cm the noise was high pitched.
Conclusion:
It turns out that my hypothesis was right. I have noticed that when you cut the straw shorter the higher the sound gets when you blow it.
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