Completar frases The soundVersión en línea Fill in the gaps about the sound. por Mª Ángeles Alonso Fernández 1 hearing eardrum speeds outer vibrates second membrane Music is sound . Sound is produced when an object and it is what can perceived by a living organism through its sense of . Sound propagates at high . The waves travel through the air at 340 meters per ( . . . ) Sounds are picked up by a very thin in our ear , the , which connects the and middle ear .
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