Why Do Stars Blink or Twinkle?
Stars blink or twinkle when we observe them (from the surface of the earth) because we are viewing them through different layers of turbulent (swirling) air and...
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Why Do We Burp?
A burp (sometimes called a belch or by its medical term, eructation) is the release of gas from the digestive tract (in this case, the esophagus and stomach) through...
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Why Does Frozen Food Keep Well?
Why Does Frozen Food Keep Well? Frozen food keeps for a long time because the freezing of the water inside the food forces the bacteria, which cause it to decompose,...
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Why Do Planes Fly in a Curve and Not a Straight Line to Their Destination?
Why Do Planes Fly in a Curve and Not a Straight Line to Their Destination? A Boeing 747 burns over 10 tonnes of fuel every hour and much more when it is climbing up to...
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What Makes People Faint?
What Makes People Faint? The most urgent need of the body-more important even than food or drink-is oxygen, which is found in the air we breathe. When we breathe in,...
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