What Is Saint Elmo’s Fire?
Saint Elmo’s fire is the name given to the glow of light that is sometimes seen on ship masts, airplane wings and church steeples during a thunderstorm. It is...
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How Do Clouds Change Shape?
How Do Clouds Change Shape? Clouds are made mostly of tiny droplets of water floating about on currents of air. On a windy day, the air currents may stretch a cloud out...
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How Come Everyone Has a Unique Voice?
How Come Everyone Has a Unique Voice? Your voice identifies you as uniquely as your looks do. Although some people might sound quite a bit alike, no two voices are ever...
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Why Does a Whale Spout?
Why Does a Whale Spout? Whales spout “fountains” of steam, which are formed by their breath. Whales breathe through blowholes on the top of their heads....
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How Can a Hummingbird Stand Still in the Air?
How Can a Hummingbird Stand Still in the Air? A hummingbird can stand still, or hover, in the air because its wings move very fast. When hovering, a hummingbird...
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