Grace-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 go up

Materials needed:

Straws & Scissors.

Experiment (procedure):

e.g. Step 1 - Crease straw

Step 2 - Cut crease into triangle shape with scissors. Blow air into cut end

Step 3 - Listen to the sound it makes, then record it.

Step 4 - Cut the straw shorter

Step 5 - Blow on cut end, then record it.

Data (What happened?)

15cm:	Makes a sound
10cm:	The sound went higher
5cm:	The sound went higher at 5cm than at 10cm

Observations:

First we each got a straw. Then we cut one end of the straw into a triangle form. At 15cm makes a little sound. Next at 10cm then sound went higher. The final time I had cut the straw the sound went higher at 5cm than at 10cm.

Conclusion:

My hypothesis was right because the sound went a little higher every time I cut the straw shorter.