1. When Washingtonâs father Augustine died in 1743, George Washington became a slave owner at the early age of eleven. In his will, Augustine left his son the 280 acre family farm near Fredericksburg, Virginia. In addition, Washington was willed ten slaves.
On the decibel scale, the smallest audible sound (near total silence) is 0 dB. A sound 10 times more powerful is 10 dB. A sound 100 times more powerful than near total silence is 20 dB. A sound 1,000 times more powerful than near total silence is 30 dB.
Many devices that children use today have noise levels much higher than 85 decibels. For example, a mobile device at its highest volume is about 105 decibels. That's 100 times more intense than 85 decibels! Manufacturers are not required to limit the maximum sound output of music devices.