What Is a Whirlpool? How Does It Affect the Climate?
What Is a Whirlpool? How Does It Affect the Climate? A whirlpool is a body of swirling quickly rotating mass of water in a river or sea into
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Powerful
What Is a Laser?
Lasers are devices for amplifying (strengthening) light into a powerful beam—a beam that can be focused very sharply, to generate heat or
What Is a Black Hole in Space?
One of the strangest mysteries of outer space is a “black hole.” A black hole is a place in space where gravity is very strong as the ma