How Are Wax Crayons Made?
Crayon manufacturing is a simple process, but one which is still relatively labor intensive. Wax crayons begin as wax and colored powders called pigments. At the crayon...
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Why Have the Eggs of Birds so Many Colors?
Why Have the Eggs of Birds so Many Colors? The coloration of wild birds’ eggs is for protective purposes. The parent birds that incubate them are not always on the nest...
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How Did Marshmallows Get Their Name?
How Did Marshmallows Get Their Name? Marshmallows are named after a marsh plant called “marsh mallow.” Marshmallow candy looks something like the cottony seed pods of...
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How Does a Caterpillar Become a Butterfly?
How Does a Caterpillar Become a Butterfly? A butterfly begins life as an egg. The female lays the egg on a plant that will serve as food for the caterpillar. When the...
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How Did Scotland Yard Get Its Name?
How Did Scotland Yard Get Its Name? The name Scotland Yard comes from its very earliest days, soon after the establishment of the police force in London in 1829. The...
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How Does Calcium Carbide Ripen Fruits?
How Does Calcium Carbide Ripen Fruits? Unscrupulous traders use the chemical to cash in on the soaring demand for mangoes, even if it means putting unsuspecting...
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How Does a Magnifying Glass Make Things Look Bigger?
How Does a Magnifying Glass Make Things Look Bigger? A magnifying glass enlarges an object’s appearance by bending the light rays that filter through it, thus...
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What Is a Tornado?
What Is a Tornado? A tornado is a great whirling windstorm. Tornadoes start in muggy thunderstorm weather, when hot, moist air meets cold, dry air. The heavier, cold...
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Why Don’t the Teeth of Animals Decay?
Why Don’t the Teeth of Animals Decay Though They Never Brush Their Teeth? Dental disease is artificial, because of combination of vaccinations that weaken the dental...
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How Does My Voice Carry over the Telephone?
How Does My Voice Carry over the Telephone? When you speak into a telephone, the sound of your voice causes a thin metal plate inside the mouthpiece to vibrate back and...
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