How Does a Cylinder Lock and Key Work?
How Does a Cylinder Lock and Key Work? A cylinder lock is made up of a revolving metal cylinder. Five small pins fall down into the cylinder when it is locked. There...
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How Are Chalk Crayons Made?
How Are Chalk Crayons Made? When you write with chalkboard chalk, you are writing with soft white limestone rock. But the limestone rock is first crushed to powder...
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Why Does the Leaning Tower of Pisa Lean?
Why Does the Leaning Tower of Pisa Lean? The tower of Pisa is the bell tower of the cathedral of Pisa in Tuscany, Italy. The tower, which is one of the most unusual in...
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How Did the Grapefruit Get Its Name?
How Did the Grapefruit Get Its Name? The grapefruit gets its name because it often grows in a large cluster resembling a bunch of grapes. Sometimes as many as a dozen...
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Would a Chicken’s Egg Break by Squeezing Its Ends?
Would a Chicken’s Egg Break by Squeezing Its Ends? Chicken’s egg can withstand firm pressure exerted on them without shattering. Try breaking an egg by squeezing its...
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