Science experiment - Straw Oboe

Science experiment:

Question: What will happen to the sound if I cut the straw shorter and blow through it?

Links to research about Sound:

http://en.wikipedia.org/wiki/Sound

http://thesaurus.com/browse/sound?s=t

Hypothesis: (What do you think will happen?) e.g. I think that….

I think the sound of the straw will get higher pitched if cut shorter

Materials needed:

Straw and Scissors

Experiment (procedure):

e.g. Step 1 - Crease the straw about 2-3cm on one end

Step 2 - Cut the creased end of the straw into a triangle shape and blow

Step 3 - Listen to the sound it makes and record

Step 4 - Cut the straw shorter to see what it will sound like

Step 5 - Blow on cut end and record

Data (What happened?)

Long 15cm	Makes a sound low-ish sound
10cm	The pitch went a little bit higher
5cm	The pitch was even higher than before

Observations:

Long - 15cm - The sound is very low

10cm - The pitch went a little higher and sounded like a party horn

5cm - It was really annoying and it was very high pitched

Conclusion:

My hypothesis was right because the sound of the straw will get higher pitched if cut it shorter.