Thursday, 8 May 2014

Science Experiment Template

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:
Long - 15 cm
Makes a Sound
Shorter - 10 cm
Sound was higher
Short - 5 cm
Sound was more high pitched.

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.

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.

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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