Wednesday, 28 May 2014

Experiment #3

Name : Paige and Raeleen

Title of experiment: Straw oboe experiment

(What do we want to find out?)

We want to find out .....

1. What is producing the sound?
A low pitch sound. Kind of like a real oboe
2. What happens to the pitch as you cut off pieces of the straw? 1401245408425.jpg
It gets higher and Higher

Hypothesis:  (what do you think will happen?)

When we have finished the first bit then we think that the pitch will be high. If we make the straw shorter than the pitch will be higher. If we make the straw longer than the pitch will be deeper.
We think this because when the vibrations are travelling through the long straw the vibrations will not be as close and they will be spread out through the straw.

How will we find out?
(Step by step)

Flatten your straw
Get a pair of scissors and cut the edges off the top of the straw.
Put the pointy bit in your mouth
Hold gently and blow
Cut two holes and the blow into it.
Blow into it
Move your fingers over the holes and play the saxaphone.  

What actually happened?

Well then we cut it shorter then the pitch went really high and it was super annoying. It sounded like a little duckling.  
When it was longer it had  low low pitch and it sounded like a saxaphone.

What did we learn?

We learnt how to annoy people with just a straw.
We also learnt that we don’t need heaps of equipment to make a little piece of instrument. During this experiment we had loads of fun. We experienced what an oboe sounds like. We loved what we have learnt and we will be happy to use it in the future.

Photo on 28-05-14 at 2.51 pm.jpg

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