A sound is:, people talking , vibrations that travel, vibrations that travel, Sounds travel through:, the air only , the air and liquids, The air, liquids and solids., A room full of nothing not even air would have:, little sound, loud sound, No sound at all, Sounds could be:, loud or soft, loud only, What is noise? , nice sounds, Unwanted sounds, Loud sounds can damage our ears?, true, false, How can we protect our ears from loud sounds?, by wearing more clothes, by wearing ear defenders , We call the loudness of the sound the:, sound, voulme, To measure how loud sounds are we use a, airpods, -sound level meter, The unit for measuring loudness is, decibels, vibrations , sounds are made by:, Vibrations, noises, the -—---- helps us understand the sounds., ears, brain.

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