What happens when vibrations are bigger?, The sound becomes louder., The sound becomes quieter., The sound disappears., What is used to measure sound volume?, Metres, Decibels, Kilograms, What can we use to measure how loud music is?, A thermometer, A ruler, A sound level meter, What does muffling a sound do?, Makes it louder, Makes it quieter and less clear, Makes it higher, What produces a high-pitched sound?, Slow vibrations, Fast vibrations, No vibrations, What produces a low-pitched sound?, Slow vibrations, Fast vibrations, Bigger vibrations only

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