How Can Fish Breathe in Water?
How can fish breathe in water? Fish breathe with gills, which are inside the fish’s head on each side of its throat. Some fish have as few as two gills in each...
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How Does a Microscope Work?
How does a microscope work? The simplest kind of microscope is a hand-held magnifying glass. The glass, which is ground into a curved shape, bends rays of light passing...
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How Does a Candle Burn?
How does a candle burn? A candle is a stick of wax with a wick, or woven cord, running through its center. When the wick is set on fire, the heat melts some of the wax...
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What Is the Purpose of Wax in Our Ears?
What is the purpose of wax in our ears?The soft, brownish, waxy substance found in the ear canal protects the inner ear from foreign bodies. The earwax, known as...
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Why Is New York City Called the Big Apple?
Keep reading to find out. Why Is New York City Called the Big Apple? In 1920’s when New York Morning Telegraph sports writer John J. Fitzgerald overheard African...
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Which Is the Biggest Fish?
The whale shark is the world’s biggest fish. (The whale which is larger is not a fish but mammal). This giant fish can grow more than 65 feet (19.81 meters) long...
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Why Do People Get Wrinkles?
Why Do People Get Wrinkles? Wrinkles are due mainly to the loss of elasticity of the skin. When people are young, the skin stretches tightly over the muscles of the...
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What Is a Shooting Star?
Keep reading to find out. What Is a Shooting Star?Shooting stars are bits of space matter called meteors. Billions of meteors, most of them no bigger than grains of...
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What Makes Popcorn Pop?
Let us find out what makes popcorn pop. While popcorn is growing in the field, it looks like any other kind of corn, but kernels of popcorn are extra-hard. When popcorn...
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How Does a Fluorescent Lamp Work?
How Does a Fluorescent Lamp Work? A fluorescent lamp is a long glass tube that is filled with a special kind of gas. This gas is called mercury vapor. The inside of the...
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