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 esoph
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Gas
When Was the Thermometer Invented?
When Was the Thermometer Invented? The first practical thermometer or instrument for measuring temperature was invented shortly before the e
Why Do Your Eyes Water When You Slice Onions?
Why Do Your Eyes Water When You Slice Onions? Onions contain strong-smelling oil. When the onion is peeled and cut, this oil escapes into th
Why Are Stars Different Colors?
Why Are Stars Different Colors? Stars are many different colors because some of them are hotter than others. Stars are either red, orange, y
Where Do Puddles Go When They Dry Up?
Where Do Puddles Go When They Dry Up? When we say that a puddle has dried up, we mean that the water in it has evaporated. When water is exp