Meaning of Rotational Movement (What it is, Concept and Definition)

What is Rotational Movement:

The rotation movement causes on planet Earth a rotation on itself that lasts approximately 24 hours.

The rotation movement gives rise to day and night. As the planet Earth rotates around itself along the axis of rotation, it exposes one half to the Sun, where the day is enjoyed, while the other half remains in the shadow, where it becomes night.

Planet Earth has two types of movements:

He rotatory motionwhich is what makes the Earth rotate around itself and,The translation movementwhich is the rotation of the Earth around the sun that lasts one year.

See also Translational motion.

The rotation of the Earth occurs from west to east. This is the reason why each day’s sun rises in the east and the sun sets in the west.

The introduction of the concept of the Earth’s rotation was first carried out in 1543 by the Polish astronomer Nicholas Copernicus (1473-1543). Until that point, it was believed that the Earth was located at the center of the galaxy and that the stars and the sun revolved around it.

Copernicus concluded the Earth’s rotation by observing the movement in the position of the stars in the sky. This idea was later confirmed by Galileo Galilei (1564-1642) when observing the position of the stars and planets in the sky using a telescope.

Consequences of rotation movement

The most obvious consequence of the Earth’s rotation movement is the succession of day and night. The Earth, upon completing a revolution around itself in an approximate time of 24 hours, leaves a part illuminated by the Sun, where it is during the day, and another part in the shadow, where it is at night.

Another consequence of the rotation movement is that, due to the speed and constant rotation, the poles of the Earth are flattened, unlike the belt of the equator or center of the Earth, which becomes more bulging. The Earth’s rotation causes its shape to not be completely spherical.

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