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:
Hypothesis: (What do you think will happen?) e.g. I think that….
It’s going to get louder
Materials needed:
paper
tape
tissue paper
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
|
it becomes harder to hear
|
2
|
funnel facing to the front
|
its becomes louder
|
3
|
funnel facing to the side
|
harder to hear
|
4
|
cotton ball or tissue blocking the narrow end of the funnel
|
you can't hear as well
|
5
|
rolled up piece of paper (facing to the front)
|
It becomes clear
|
6
|
rolled up piece of paper (facing to the side)
|
sounds the same
|
Observations:
When the paper was flat I found out that it was harder to hear
When the funnel is facing the front it becomes louder
When the funnel is facing to the side its harder to hear
When I put some paper at the end of the funnel its harder to hear
When the funnel is rolled up the sound gets a bit clearer
the sound doesn't change
Conclusion:
I learnt that sound can be amplified by a funnel shaped piece of paper
