Funnel ears Science 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)

Links to research about Sound:

http://www.thetech.org/exhibits/online/robotzoo/guide/bats_and_echoes.html

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

As a flat paper the sound would be like someone inside your head

Materials needed:

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? Can you hear clearly?

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? Can you hear clearly?

Step 3 - Next, face the funnel to the side while your partner speaks to you. Does it make a difference to the sound that you can hear?

Step 4 - Put some cotton balls or tissue paper into the funnel to block one end. Does it make a difference to the sound you hear?

Step 5 - Next, roll the piece of paper up and l

Data (What happened?)

	Shape/object/materials	Results:
1	flat piece of paper	No difference at all to the sound.
2	funnel facing to the front	sound is more clear and louder.
3	funnel facing to the side	the sound isn’t more clearer because it echos and its quieter
4	cotton ball or tissue  blocking the narrow end of the funnel	The sound is like everyone is whispering to each other
5	rolled up piece of paper (facing to the front)	it sound like it was echoing and when i faced the other way it sounded like it was a beach near my ear…..
6	rolled up piece of paper (facing to the side)	It would sound any better the sound would echo a little.

1130 feet per second

Observations:

when I used a flat paper it didn’t make any sound...

when we use a funnel sound is more clear and louder.

when the funnel facing the front the sound isn’t more clearer because it echos and its quieter. When we use a Cotton ball or tissue  blocking the narrow end of the funnel The sound is like everyone is whispering to each other. When we used rolled up piece of paper (facing to the front it sound like it was echoing and when i faced the other way it sounded like it was a beach near my ear. When we used rolled up piece of paper (facing to the side) It would sound any better the sound would echo a little.

Conclusion:

When you are facing to the side it echos. When you are facing to the front it is more clearer and you can hear them more better.  The rolled paper facing toward the front sounded more clearer than facing in toward the side. The funnel facing towards the person sounded the most clearest than facing away from them.

If the paper it flat all you can hear is them talking at the back of you but if its rolled up you could hear more better.