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Everyday Science: Gear Quiz
play.howstuffworks.com/quiz/gear-quiz
Whether you know it or not, you probably use gears several times each day. Gears are used in a wide variety of mechanical devices including wrist watches, bathroom scales, washing machines and, of course, automobiles.
How Zippers Work
science.howstuffworks.com/innovation/everyday-innovations/zipper.htm
Better than buttons? Maybe. Less time-consuming than laces? Definitely. As far as fastening mechanisms go, the zipper is a work of art. Learn exactly what makes up a zipper and how it all fits together so perfectly.
What Is a Hard Drive and How Does It Work?
computer.howstuffworks.com/hard-disk.htm
Nearly every desktop computer requires a hard drive for data storage, but what is a hard drive, exactly? Your hard disk drive holds all of the information available on your computer. Take a look inside this incredibly precise storage mechanism!
How Does a Gas Pump Know When to Stop?
auto.howstuffworks.com/fuel-efficiency/fuel-consumption/gas-pump-full-tank.htm
The days of spilling gasoline all over our shoes are pretty much over. But it begs the question: How does a gas pump know when to stop? Read this simple explanation of the mechanics that cause a gas pump to shut off when the tank is full.
How CD Burners Work
computer.howstuffworks.com/cd-burner.htm
With the rise of the MP3 format, burning your own music CDs has never been so popular -- or so easy. CDs have become one of the most widely adopted data-storage mechanisms. Find out how CD burners work.
The Ultimate Octopus Quiz
play.howstuffworks.com/quiz/octopus-quiz
Octopuses are mysterious sea-creatures that always seem to intrigue young children. Octopuses are smarter and more talented than you may think. They even have a unique defense mechanism to protect them against predators. Take this quiz and learn about the mysteries of the octopus.
The Auto Shop Safety Quiz
play.howstuffworks.com/quiz/the-auto-shop-safety-quiz
Think you've got what it takes to work in an auto shop? Have you ever dreamed about working on cars and trucks for a living and getting your hands dirty? Take this knowledge quiz to see how well you'd fare in a garage or mechanic's shop.
The Pufferfish Really Isn't Happy to See You
animals.howstuffworks.com/fish/pufferfish.htm
You've probably seen pufferfish on TV or at your local aquarium, puffing up like a balloon when they're startled. But there's way more to pufferfish than their signature defense mechanism. They're a diverse group of species with some truly unique traits.
Can You Name the Auto Shop Tool From an Image and a Hint?
play.howstuffworks.com/quiz/can-you-name-the-auto-shop-tool-from-an-image-and-a-hint
So you know your way around an auto shop, do you? Do you think you could identify a range of different tools that mechanics use on a day-to-day basis? You could? OK, let's see how well you fare!
When I put my car in park what really keeps it from moving?
auto.howstuffworks.com/auto-parts/brakes/brake-types/car-in-park.htm
With your car in park, you can feel safe it won't roll down that hill. Learn how putting your car in park keeps your transmission from spinning.