Why are all planets round?
December 03, 2015
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You asked us a question. "Why are all planets round?"
In a nutshell? Gravity.
We all know what gravity is. Right?
It is what makes apples fall from trees. And people fall flat on their faces.
The bigger an object is, the stronger its gravitational field.
And planets are pretty big. So gravity acts on them as a strong force. It pulls everything together towards their center.
And the ending shape is a sphere.
Planets are not perfectly round. They have a bit of what you might call a spare tire.
Planets spin around their axes. The force made by the spinning works against gravity. It causes a planet to bulge out at its equator.
Join the club, planets.
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CRITICAL THINKING QUESTION
Why aren't planets perfectly round?
Write your answers in the comments section below