Science Experiment :)

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://www.universetoday.com/61166/what-is-sound/

http://www.sciencekidsathome.com/science_topics/what_is_sound.html

https://www.youtube.com/watch?v=oElbMctAVlY&safe=active

Hypothesis: (What do you think will happen?) e.g. I think that the sound will stay the same because I’ve never tried this experiment before.

Materials needed:

* Straw

* Scissors

* Air to breathe through it

Experiment (procedure):

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

Step 2 - Cut creased straw into triangle shape 1.5cm long. Blow air into cut end.

Step 3 - Listen to the sound it makes. Record

Step 4 - Cut the straw shorter.

Step 5 - Blow on cut end. Listen record.

There You Go !

Data (What happened?)

Long 15cm. Makes a sound

10cm. Sound was higher

5cm. Sound was more high pitched

Observations:

My result for the experiment on straw was really creative on sounds and also fun because you can make different sounds as you keep cutting the straw shorter and shorter.

Conclusion:

My hypothesis was wrong because the sound did change while we kept cutting the straw shorter and shorter.