September 11,2006
The safe exposure limit for noise is 85 decibels for eight hours a day. Every time the volume level increases by three decibels, the safe exposure time drops by half.
1. Why would a car stereo be used in for the snapshot?
It would be used for a snapshot because many people listen to car stereo’s very loudly and it is common.
2. Why is the “100″ more to the left than the numbers above it?
It is more to the left because it has the leastamount of decibels.
3. Why are the lines wavy? What does it represent?
The lines are wavy because it shows the way sound travels and it represents sound wavys.
4. What is the purpose of the ear on the right? To show how loud people are listening to different things in there ears.
5. Do you need to know what a decible is in order to understand theis snapshot? Explain your answer.
