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How Tooth Whitening Works
science.howstuffworks.com/innovation/everyday-innovations/tooth-whitening.htm
In the past few years, tooth-whitening has exploded as the physical upgrade of choice. Unlike nose jobs and chin tucks, just about anybody can afford to try this at home. Learn about different whitening techniques and how they work, and decide if you should give it a try.
Can You Pass This Basic Trivia Quiz?
play.howstuffworks.com/quiz/can-you-pass-this-basic-trivia-quiz
Do your friends ask you to tag along to trivia night, or are you always left out? Once you pass this basic trivia quiz, you'll prove why you deserve the invitation, or why you should stay at home! Which one will it be?
Adjacent Angles: Types and Examples
science.howstuffworks.com/math-concepts/adjacent-angles.htm
Adjacent angles are one of the earliest and most important concepts to learn in basic geometry, as they have applications in further subjects like trigonometry, physics, and engineering. Effective students of geometry should be able to identify adjacent angles on sight and calculate them to a great degree of accuracy without a protractor.
What % Southern Are You?
play.howstuffworks.com/quiz/what--southern-are-you
Are you more Southern than a bag full of boiled peanuts or should you move back to New England? If you've ever eaten crawdads, bopped your head to Lynyrd Skynyrd or skinny-dipped in a muddy swimmin' hole, you've got to play this quiz!
What Do Horses Eat in the Wild and on Farms?
animals.howstuffworks.com/mammals/what-do-horses-eat.htm
An adult horse should typically eat about 1.5 to 2 percent of its body weight in food each day. This means a 1,000-pound (454-kilogram) horse may eat 15 to 20 pounds (6.8 to 9 kilograms) of hay and grass daily.
Can You Pass This Very American Food Quiz?
play.howstuffworks.com/quiz/can-you-pass-this-very-american-food-quiz
Calling all foodies out there! Fans of American food items should be able to easily pinpoint their favorites among this list. See if you can identify the yummy goodies in the screenshots-but get some snacks first, as this quiz is guaranteed to induce hunger! Happy eating and answering!
10 Really Smart People Who Did Really Dumb Things
science.howstuffworks.com/life/inside-the-mind/human-brain/10-smart-people-dumb-things.htm
Having a Ph.D., four stars on your general's uniform or a seat in the Oval Office won't necessarily stop you from doing things that make others want to whack you on the head with a "how could you?" Here are 10 who should've thought twice.
Was It Boeing or Airbus?
play.howstuffworks.com/quiz/was-it-boeing-or-airbus
One of the most notable rivalries in the skies: Boeing vs Airbus. One is American, one is European and both of them have been standout names in the aviation industry for years. Even if you have a preference, true aircraft aficionados should know all of these airliners like the back of their hand!
Could You Live in Alaska?
play.howstuffworks.com/quiz/could-you-live-in-alaska
You might daydream about living off-grid in Alaska, but could you really do it? Do you have the kind of grit it takes to survive? Answer our questions, and we'll let you know if you make the cut or if you should stay out of the woods!
Can You Identify All Of These Electrical Tools?
play.howstuffworks.com/quiz/identify-all-these-items-used-electricians-can-you-learn
Whether you are that friendly neighborhood electrician, DIYer, or just someone who likes to change lightbulbs, the electrician's tools should never be too far off. But, how well can you identify them? Hopefully, your lights are on because you might need a little spark with this quiz.