Funnel Ears 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….

Materials needed:

Paper, tissue, tape.

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? Is the sound quality the same?

Step 5 - Next, roll the piece of paper up and face one end of the paper roll towards your partner. Listen to your partner speak. Is there a difference to the sound you hear?

Step 6 - Finally, turn to the side with your paper roll and listen to your partner speak. What is the sound like?

Data (What happened?)

	Shape/object/materials	Results:
1	flat piece of paper	Didn’t make any difference.
2	funnel facing to the front	it made a little echo sound.
3	funnel facing to the side	My partner has a Clearer voice.
4	cotton ball or tissue  blocking the narrow end of the funnel
5	rolled up piece of paper (facing to the front)	sounds normal.
6	rolled up piece of paper (facing to the side)	Voice sounds clearer and louder.

Observations: (This is your description of what happened)

So, When I used the flat piece of paper it didn't make any difference. When the funnel faced the front it made an echo sound. When I put the cotton ball into the funnel my friends voice sounded like a baby voice. When I rolled it up facing the froont it sounded normal. And when I rolled it up facing the side their voice sounded louder and clearer

Conclusion: (Was your hypothesis correct? This is your summary of the experiment)

We put the piece of paper and face it in different directions to test out the sound when our friend talks into the paper.