Mathematics and Society - OS X Lion Server

6. The relative intensity column is given in powers of ten. Each soundis 10 times as intense as the sound before it.Write some of the relative intensity numbers using exponents.For example: 10 = 10 1100 = 10 x 10 or 10 21000 = 10 x 10 x 10 orthreshhold of pain =lethal level =threshhold of hearing =Make a new column inthe sound chartwriting the relativeintensities aspowers of 10.7. What sound is onehearing?one billion timesthousand times as intense as the threshhold ofone million times as intense?as intense?8. Look at each sound and compare its relative intensity to its decibelrating. Explain how the relative intensity of a sound can help youfigure out the decibel rating.Dearie, you're something, that loud mouth and all!- 9.LONDON, England (AP) ­Michael Featherstone and hiswife, who run a pub on theYorkshire coast, have beenjudged the world's loudestmouths.Competing Wednesday in the"Second World Shouting Championships,'"Mrs. Featherstonelet loose a 109.7-declbel yell toretain the woman's title she wonlast year.Her husband was the loudestof the male competitors with 110decibels. But he missed the 111­decibel mark set-by the winnerlast year, a fisherman.Compare the Featherstone's records to the decibel reading on the soundchart. They each yell about as loud as a10. Read the articles on the next page.a. In the article "Loud Music May Cause Migraines,"how many discotheques would each inspector have toinvestigate if they were all going to be checked inone night?how many young people out of the 7,000 would you guesshave measurable hearing loss?b. Do you think the "caution" in the stereo article is a warning?Why?c. Do you like to listen to really loud music? If you do, youmight want your hearing checked frequently.Permission to use granted by The Associated Press317