Thursday, May 20, 2010
10 FUN FACTS ABOUT HEARING
1. Fish do not have ears, but they can hear pressure changes through ridges on their body.
2. The ear’s malleus, incus and stapes (otherwise known as the hammer, anvil and stirrup) are the smallest bones in the human body. All three together could fit together on a penny.
3. The ear continues to hear sounds, even while you sleep.
4. Sound travels at the speed of 1,130 feet per second, or 770 miles per hour.
5. Dogs can hear much higher frequencies than humans.
6. Ears not only help you hear, but also aid in balance.
7. Snakes hear through the jaw bone and through a traditional inner ear. In essence, snakes have two distinct hearing mechanisms, which helps them hear and catch prey.
8. Sitting in front of the speakers at a rock concert can expose you to 120 decibels, which will begin to damage hearing in only
7 1/2 minutes.
9. Thirty-seven percent of children with only minimal hearing loss fail at least one grade.
10.Male mosquitoes hear with thousands of tiny hairs growing on their antennae.