Friday, May 16, 2014

Paper Experiment.

Science experiment:

Question: What will happen to the sound if I change the shape of a piece of paper? (e.g. from a flat shape to a funnel shape) There was no change between the flat piece of paper and the funnel. Because, there were ways for the sound to be heard clearly. Like hollow pieces.

Links to research about Sound:

Hypothesis: (What do you think will happen?) e.g. I think that….
When you put the funnel to one side you would only be able to hear that side.

Materials needed:
Paper, tape  and a couple of tissues.
Experiment (procedure):

e.g. Step 1 - First hold a flat piece of paper against your ear. Block your other ear with your hand. Get your partner to speak to you. What is the sound like? Sounds normal. Can you hear clearly? Yes

Step 2 - Next, roll the piece of paper into a funnel shape. Put the funnel against your ear. Face the funnel towards your partner and listen to them speak. What does it sound like? It sounds . Can you hear clearly? Yes

Step 3 - Next, face the funnel to the side while your partner is speaking. What was different about this? It sounded like my partner was far away. I could hear all the background noise.

Step 4 - After that, fill your funnel with tissue or cotton. Did this make a difference? Yes, it did. It sounded like something was blocking my partner.

Step 5 - Next, roll your piece of paper up to make a cylinder like shape. What difference did this make? No difference really. It just sounded like I was tunnel.

Data (What happened?)

flat piece of paper
It could've been clearer.  But it didn't really make a difference.
funnel facing to the front towards partner
It sounder really clear. But there was a bit of echo.
funnel facing to the other side
It sounded like my partner was really far away.
cotton ball blocking funnel
It sounded....blurry??
rolled up piece of paper (facing to the front)
It was really loud, and I could hear all the background noise.
rolled up piece of paper (facing to the side)
I could hear loud and clear.

Observations: My first experiment was with the flat piece of paper.
I rolled up my piece of paper into a funnel shape, and taped it. I asked Porscha to speak to me, and it sounded like I was inside of a tunnel.

Conclusion: My hypothesis was wrong. I could hear both sides. Besides all the background noise, I could hear my partner really clearly.

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