Sagot :
Answer:
Sound comes from vibrations. When you hit the bottle with a spoon, it makes the glass vibrate. When you fill the bottle with water, the glass cannot vibrate as quickly, because water slows or dampens the vibrations. Fast vibrations make a high sound and slow vibrations make a low sound. A full bottle will produce a slow vibration and a low sound. An empty bottle will produce a faster vibration and a higher sound.
Explanation:
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