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What you need:
- shoe box
- elastic bands
- (cardboard)
How to do the experiment:
Step 1:
Open the shoe box.
Step 2:
Put elastics around the opened box.
Step 3:
Pluck each elastic with your finger and listen to sounds.
Step 4:
With one finger stretch the elastic and then with pluck it with another finger. Listen if the sound has changed.
What should happen:
When you pluck elastics, they start to vibrate. Elastics and a tension make the noise. Wide elastics usually make lower tones, because they are vibrating slower, on the other hand, the thin elastics vibrate faster, so they are usually making higher tones.
There is also a difference between loose and tight elastics; loose elastics are vibrating slower, and therefore creating lower tones than tight elastics that are the same width.
- shoe box
- elastic bands
- (cardboard)
How to do the experiment:
Step 1:
Open the shoe box.
Step 2:
Put elastics around the opened box.
Step 3:
Pluck each elastic with your finger and listen to sounds.
Step 4:
With one finger stretch the elastic and then with pluck it with another finger. Listen if the sound has changed.
What should happen:
When you pluck elastics, they start to vibrate. Elastics and a tension make the noise. Wide elastics usually make lower tones, because they are vibrating slower, on the other hand, the thin elastics vibrate faster, so they are usually making higher tones.
There is also a difference between loose and tight elastics; loose elastics are vibrating slower, and therefore creating lower tones than tight elastics that are the same width.