Difficulty: Easy
Average Score: 100%
Our world is getting louder. Sometimes it even sounds like noises are competing to see which can be loudest. Think about your home. If the dishwasher is running, you might tum up the volume on the TV to hear it better. Add the noise from a vacuum cleaner oryour brother's piano practice, and you might turn up the T'V volume even more. Any noise at 85 decibels (a unit of loudness) or higher can hurt your hearing if it goes on long enough.
Or think about the school bus. Loud place, right? If you're trying to listen to your MP3 player on the school bus, you might be tempted to turn the volume up even louder. But the volume control goes a lot higher than 85 decibels, and that can hurt your hearing. Iyou want to keep hearing your favorite songs, keep the volume low now.
Concerts and band practice can also harm your hearing. It doesn't matter what kind of music it is. A school orchestra playing at top volume can easily reach 100 decibels, and some brass and percussion instruments reach 130 to 140 decibels at close range. Pop concerts with screaming fans can reach 120 decibels. That's about as loud as an ambulance siren, and you know that 2 hours of an ambulance siren would hurt your hearing!
-National Institutes of Health, from
"Why Protect Your Hearing?"

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