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Friday, November 13, 2009
Friday Fun: Five Gross and Goofy Body Facts
Most people pass wind about fourteen times a day and give off enough gas to fill a 1-liter soda bottle.
What causes the popping noises you sometimes hear when you fart? The walls of your anus—the hole at the end of your digestive tract—vibrating back and forth. The loudness of the fart depends on how fast the gas rushes out and the tightness of the muscles around your anus.
Ever heard the saying: “Whoever smelt it, dealt it”? It’s not true. The farter usually smells the stench last. Because gas blasts away from the culprit’s body, the stinky scent takes a while to reach his or her nose.
Some snakes hiss when enemies get too close. Others shake their rattling tails. But Sonoran coral snakes and western hook-nose snakes let out a fart that can be heard from up to 6 feet (1.8 meters) away. That’s enough to spoil any predator’s appetite!
How do herring find one another after the sun goes down? They fart. The blasting bubbles of gas sound like a high-pitched raspberry as they shoot though the water. Other herring can hear the noise, but larger fish can’t.
Melissa Stewart is the award-winning author of more than 180 nonfiction books for children. Her lifelong fascination with the natural world led her to earn a B.S.
in biology and M.A. in science journalism. When Melissa isn’t writing or speaking to children or educators, she’s usually exploring natural places near her home or around the world. Website: www.melissa-stewart.com; Twitter: @mstewartscience
• AAAS/Subaru Prizes for Excellence in Science Books • ALA Robert F. Sibert Informational Book Award • CRA Eureka! Nonfiction Children’s Book Award • Cook Prize for STEM Picture Book • Cooperative Children’s Book Center Choices List • Cybils Nonfiction Awards • NCSS Notable Social Studies Trade Books for Young People • NCTE Orbis Pictus Award for Outstanding Nonfiction for Children • NSTA-CBC Outstanding Science Trade Books for Students K-12 • YALSA Award for Excellence in Nonfictionfor Young Adults