• The hammer, anvil, and stirrup are the three smallest bones in our bodies.
Together they are about the size of a pea!
• Our ears pick up sound while we sleep, but our brain does not “hear” it!
• Shrek's ear-wax candle couldn't exist! The stuff in our ears is not really wax, but an oily substance called cerumen, which helps keep our ears clean.
• You should never stick anything smaller than your elbow into your ears, because it could damage your eardrum.
• Sound travels at 1130 feet/second. That's about one mile in 5 seconds!
• To determine how far away a thunderstorm is from you: Wait until you see lightning, then count 1-Mississippi, 2-Mississippi, etc. until you hear thunder, and divide by 5. The answer will tell you how many miles away the storm is from your location.
• In Africa, a tribe of people called Maabans live in such quiet that they can hear a whisper from across a baseball field (even when they are very old.)
• One-third of the total power of a 75-piece orchestra comes from the bass drum.
• Aging causes gradual hearing loss, mostly in the high frequencies.
• An orchestra playing classical music at 120 dB will damage your hearing as quickly as heavy metal rock music playing at 120 dB.
• Speech reception is not seriously impaired until there is about 30 dB loss;
but by that time severe hearing damage may have occurred.
• Hypertension and psychological difficulties can be related to noise exposure.
• The incidence of hearing loss in classical musicians has been estimated at 4 to 43%, in rock musicians it is 13 to 30%.
—adapted from information provided by the Sight and Hearing Association (www.sightandhearing.org/news/healthissue/archive/hi_0802.asp