Rotation Movement Meaning

What is Rotation Movement:

The rotation movement causes the planet Earth to rotate on itself that lasts approximately 24 hours.

The rotational movement gives rise to day and night. When the planet Earth revolves around itself along the axis of rotation, it exposes one half to the Sun, where you can enjoy the day, while the other half remains in the shade, where it is night.

The planet Earth has two types of movements:

  • The rotational movement, which is what makes the Earth rotate around itself and,
  • The translational movement, which is the rotation of the Earth around the sun that lasts one year.

See also Translational motion.

The rotational motion of the Earth occurs from west to east. This is the reason why the sun of each day rises to the east and the sunset happens to the west.

The introduction of the concept of the Earth's rotation was made for the first time in the year 1543 by the Polish astronomer Nicolaus Copernicus (1473-1543). Until that height, it was believed that the Earth was located in the center of the galaxy and that the stars and the sun revolved around it.

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

Consequences of the rotational movement

The most obvious consequence of the rotational movement of the Earth is the succession of day and night. The Earth, when 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 rotational 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 bulky. The rotation of the Earth makes its shape not completely spherical.

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