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| http://www.asufoundation.org/s/1469/foundation/PEP/index.aspx?sid=1469&gid=2&pgid=1647 |
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The earth has two kind of movements: revolution and rotation. Which is the different between both?
Revolution: It is the movement of the earth around the Sun. It takes 365 days and 6 hours. This is why we have leap years every four years.
Rotation: The earth has an invisible axis, and the earth rotates on it. It takes 24 hours. This is why we have day and night.
