Funnel Ears Science Experiment Template!

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

http://www.dolphins-world.com/how-do-dolphins-hear/

http://ucalgary.ca/pip369/mod6/sound/impo

http://en.wikipedia.org/wiki/Sound

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

The sound will go louder

Materials needed:

Papar, Sellotape, Tissue

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	Didn’t make any difference
2	funnel facing to the front towards partner	It sounds really loud
3	funnel facing to the side (opposite partner)	Its more quieter then when it was facing towards my partner
4	cotton ball or tissue  blocking the narrow end of the funnel	I could hear some echo noices
5	rolled up piece of paper (facing to the front)	Its really loud, it hurts my ear
6	rolled up piece of paper (facing to the side)	It sounds normal

Observations:

When the paper was just a flat shape and my partner talked it was normal and it made no difference. After that I made a funnel shape with the flat piece of paper and i got my partner to talk to me and the sound was more clearer and louder. I then got the funnel shape paper and put it on my other ear and covered my left ear and my partner talked and it sound more quieter. Then we got tissue and put it into the funnel shape paper and my partner talked and it sounded loud and clear. We then rolled up the paper and I put it on my left ear and my partner talked and it was really loud that it hurted my ear. I then put it on my other ear and it sounded normal.

Conclusion:

I have realised that the sound changes or goes louder every time we face the paper to our partener. When we face it to the opposite side of our partner and cover our other ear, the sound is normal and more quieter.