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?
The car stereo is used in the snap shot because it is always used the loudest sound out of all three things.
2. Why is the “100″ more to the left than the numbers above it?
The “100″ is more to the left because its the least damaging to your ears.
3. Why are the lines wavy? What does it represent?
The lines are wavy because it is sound and sound is in waves.
4. What is the purpose of the ear on the right?
The
5. Do you need to know what a decible is in order to understand theis snapshot? Explain your answer.
