volume - how powerful the sound wave is which tells us how loud or quiet it is , vibration - invisible waves that move quickly , sound wave - invisible waves that travel though a medium like the air from one place to another, loud - a word used to describe a sound made by strong vibrations or a greater amplitude , quiet  - a word used to describe a sound made by weak vibrations or shorter amplitude , source - where something comes from, sound - vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear., decibels - a measure of how loud something is,

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