What Are Shooting Stars?
If you look up at the sky on a clear night, you may see a “shooting star” flash across the sky, but they are not stars. Shooting stars are b
Tag
Gravity
What Are Water Towers For?
Water towers are nothing more than simple elevated tanks of water. Water towers provide storage and help keep a town’s water pressure high a
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
What Causes the Ocean Tides?
What Causes the Ocean Tides? The rise and fall of the tides are caused mainly by the pull of gravity from the moon on the earth’s waters. Th
How Do Frisbees Fly?
How Do Frisbees Fly? When a Frisbee soars through the air, its spinning motion is what keeps it flying. Operating on the principle of an air