What Are Sunspots?
Sunspots are dark, relatively cool spots on the surface of the sun in a region called the photosphere. Sunspots have temperatures of about 3,800 degrees K. They can be...
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What Is a Watermark?
A watermark is an identifying image or pattern in paper which is very useful in the examination of paper as it can be used for dating, identifying sizes, mill...
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What Is Sugar Made From?
Sugar is made by some plants to store energy that they don’t need straight away like animals make fat. Most of the sugar we eat comes from sugar cane and sugar...
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When Were Jellybeans Invented?
When Were Jellybeans Invented? The National Confectioners Association of the United States says the jellybean is a descendant of “Turkish delight,” a fruit...
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How Do We Get Cinnamon?
The spicy cinnamon used in cooking and in flavoring candies is made from the inner bark of branches of the cinnamon tree. The familiar cinnamon flavor comes from...
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Where Did the Bible’s Name Come From?
Where Did the Bible’s Name Come From? The Bible gets its name from the Greek word “biblia,” meaning “little books.” The Bible is not a single book but a collection of...
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What Is a Laser?
Lasers are devices for amplifying (strengthening) light into a powerful beam—a beam that can be focused very sharply, to generate heat or extreme light intensity....
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How Long Do Animals Live?
How Long Do Animals Live? The lives of animals range from several hours to many years. An adult mayfly lives only a few hours. The giant tortoise may live more than 150...
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How Did Earth Get Its Name?
How Did Earth Get Its Name? The name “earth” comes from the Old English and German words “eorthe, ertha & erde.” Before people had the idea of the earth as a...
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What Are Toenails and Fingernails Made Of?
What Are Toenails and Fingernails Made Of? Fingernails and toenails are special growths of hardened skin cells. Most of the nail is made up of a tough, horn-like...
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