Hiwarau 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)

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

Hypothesis: (What do you think will happen?) e.g. I think that the sound will be Louder and echo a funnel is used.

Materials needed: Paper Cotton Or 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? 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
1	flat piece of paper	didn't make any difference
2	funnel facing towards your partner while they speak	sounds loud and different. Voice sounded fuzzy.
3	funnel facing away from your partner (opposite side)	voice sounded quieter. Can hear other voices in the background.
4	cotton ball or tissue  blocking the narrow end of the funnel	voice sounds quieter. can hear some background noise.
5	rolled up piece of paper (facing to the front)	voice still sounds normal
6	rolled up piece of paper (facing to the side)	voice sounds quieter

Observations: (This is your description of what happened)

i think it will be louder.

When Mrs Lagitupu was talking to me it sounded quiet when she used the rolled up piece of paper and it was facing the other side. When the funnel was facing the other side and I blocked my ear, her voice sounded quieter.

When she used the funnel her voice was loud and when she talked from the paper it sounded clear and loud.

I have noticed the sound has changed when you switch ears. When my teacher talks in my ear it makes my ear vibrate when she talks. It was loud when she spoke on my left ear.

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

When a funnel was used, the sound was louder and clearer. I sort of echoed too. My hypothesis was right.