1 - Getting Started ~4 mins
Listen for a moment. What is the quietest sound you can hear right now? What is the loudest sound you have heard today?
Today we will find out what makes a sound louder.
2 - What Do We Think? ~5 mins
Our question today: what happens to the sound if we tap a drum gently, then strongly?
Volume means how loud or quiet a sound is.
Predict with a partner: will the sound get louder, quieter, or stay the same? Why do you think that?
3 - Gentle Then Strong ~12 mins
In your group, try a gentle tap, then a strong tap on the drum. Watch the rice. Listen carefully.
The rice shows a vibration: a quick wobble that makes a sound. Which tap made the rice jump higher? Which tap sounded louder?
4 - See the Wobble on the Board ~6 mins
Look at the drum on the board. We will try a quiet hit, then a louder hit.
Watch the size of the wobble. Does the sound get higher like a squeak, or does it stay the same kind of sound and only get louder?
What makes a sound louder?
5 - Record What We Found ~8 mins
First: on your Investigation Journal page, draw or write what you predicted. Then show the gentle tap and the strong tap: how high the rice jumped, and whether the sound was quieter or louder.
Next (must finish): put these three in order from quietest to loudest: gentle drum, strong drum, talking voice.
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