Difference between Rotate and Revolve
Key Difference: Rotate and Revolve describe different processes altogether. In layman’s terms, remember that the Earth rotates around its axis and revolves around the Sun.
include("ad4th.php"); ?>Rotate and revolve often create confusion when one tries to define them. There is a difference between rotate and revolve that shows how our solar system is organized, and how our planet relates to it.
According to Dictionary.com, ‘Rotate’ is:
- To cause to turn around an axis or center point; revolve.
- To turn around on or as if on an axis.
A rotation is basically a circular movement. An object rotates around the fixed point of rotation. One rotation is completed when a planet turns on its axis once. Earth rotates from west to east around an imaginary line, which passes through the poles, i.e. north and south poles.
include("ad3rd.php"); ?>According to Dictionary.com, ‘Revolve’ is:
- To move in a circular or curving course or orbit: The earth revolves around the sun.
- To turn around or rotate, as on an axis: The wheel revolves slowly.
- To proceed or occur in a round or cycle; come around again in the process of time; recur.
The earth revolves around the sun. Revolve is when something, usually a planetary body, moves around something in a usually elliptical path. In revolving, the moon is a little different. The moon rotates once about every 27 days, and revolves once about every 27 days. So every time the moon goes around Earth it turns around one time; this is the reason it always looks the same.
In simple terms, remember that the Earth rotates around its axis and revolves around the Sun.
Comparison between Rotate and Revolve:
|
Rotate |
Revolve |
Definition |
Rotate is when something spins on an axis. |
Revolve is when something, usually a planetary body, moves around something in a usually elliptical path. |
Origin of the word |
Latin word rotare, meaning ‘to cause, to spin, roll, move in a circle’ |
Latin word revolver, meaning ‘to roll back’ |
Earth |
Earth takes only 24 hours to rotate on its axis. |
Earth takes 365 days to revolve around the sun. |
Moon |
Moon rotates around its axis. |
Moon revolves around the Earth in the same amount of time, 27 days. |
Causes |
Rotation causes day and night. |
Revolution causes different seasons. |
Relative speed |
Relative speed of rotation is utmost at the equator and slowest at the poles. |
Relative speed of revolution is fastest when the sun is nearest to the Earth and is slowest when it is at the farthest end. |
Image Courtesy: hidayaresearch.com, geography4kids.com
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Sylas
Thu, 02/22/2018 - 09:21
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