What Makes the Wind?
What Makes the Wind? Wind is the movement of air across the surface of the earth, caused by warm air rising and being replaced by cooler air. Except for the monsoons,...
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What Is a Cowlick and Why Is It Called So?
What Is a Cowlick and Why Is It Called So? A cowlick — sometimes called a “hair whorl” — is a small group of hair that either stands straight up or lies in...
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When Does a Slip Current Occur?
When Does a Slip Current Occur? A slip current occurs when a steady stream of air tries to resume its even flow after being diverted by an object at right angles to it....
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How Does a Tuning-fork Work?
How Does a Tuning-fork Work? A tuning-fork vibrates to give a musical note of definite pitch or frequency and is marked on the fork by a letter or symbol referring to...
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What Is Radar?
What Is Radar? Radar, or radiolocation, as it was called in the early days, is the use of radio waves to find the whereabouts of aircraft or ships. Electromagnetic...
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