What Makes a Groundwater Well Go Dry?
What Makes a Groundwater Well Go Dry? A well is said to have gone dry when water levels drop below a pump intake. This does not mean that a dry well will never have...
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Where Does a Swallow Build Its Nest?
Where Does a Swallow Build Its Nest? A swallow builds its nest inside farm buildings and on ledges in old chimneys. The nest is made of mud, straw and saliva, with...
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Are Brown Eggs Better than White Eggs?
Are Brown Eggs Better than White Eggs? Some people say that brown-shelled eggs are more wholesome and nutritious to eat. Other people prefer white-shelled eggs. The...
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What Other Animals Produce Milk Fit for Human Consumption?
What Other Animals Produce Milk Fit for Human Consumption? Most of the milk children around the World drink come from one animal: the humble dairy cow. If you’ve...
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How Do Gymnasts Perform a Pommel Horse Routine?
How Do Gymnasts Perform a Pommel Horse Routine? The pommel horse, also known as the side horse, is a special apparatus used as part of an artistic gymnastics routine....
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How Do Cashew Nuts Grow?
How Do Cashew Nuts Grow? The cashew is a thin-shelled nut that grows on a tropical evergreen tree. The nut forms at the tip of a large, fleshy base, which is called the...
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Why Do Roosters Crow?
Roosters crow in order to attract hens (female chickens), and to tell other roosters: “This is my territory, stay out!” Sometimes roosters seem to crow just for the joy...
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How Are Glass Marbles Made?
The marbles with which you play games are made by forming molten glass into balls. Bright swirls and stripes are added by twisting colored strips of red-hot glass...
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Why Is It Hot at the Equator?
Why Is It Hot at the Equator? The equator is an imaginary circle around the Earth, dividing the Earth’s surface into the Northern and Southern Hemispheres. People who...
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What Causes Waves in the Ocean?
What Causes Waves in the Ocean? Most waves in the ocean are caused by the wind. Somewhere over the ocean, wind ruffles the surface of the water. Ripples form and grow...
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