The decibel (dB) is a unit of measurement for sound. Every increase of 10 dB is a tenfold increase in sound intensity. The bar graph shows the decibel levels for some common sounds. Use this graph for below Exercises.

1. Which is the quietest of all the sounds shown in the graph?
2. What is the difference in sound intensity between live rock music and loud television?
3. Automobile classes are defined by the amount of interior room. A subcompact car is defined as a car with a maximum interior space of 99 cubic feet. A midsize car is defined as a car with a maximum interior space of 119 cubic feet. What is the difference in volume between a midsize and a subcompact car?
4. The smallest commercially available jigsaw puzzle is a 1000-piece puzzle manufactured in Spain. It is in the shape of a rectangle with length of 18 inches and width of 12 inches. Find the perimeter of this rectangular-shaped puzzle.

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Declbel Levels for Common Sounds 120 100 100 88 9 80 70 60 40 30 20 10 Live Rock Snoring Leaves Normal Loud Rustling Conversation Music Television Sound Examples Decibels (dB)