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Movement of the Moon: Rotation and Revolution of the Moon with respect to the Earth

Illustration of Moon Movement. (Photo: https://pixabay.com)

Month is a satellite of the earth, because the moon moves to follow the earth. The moon does not emit light, but the moon reflects light from the sun to the earth.

As a satellite Earth, the moon performs two kinds of movement, namely rotation and revolution. Well, this article will discuss more about the movement of the moon: rotation and revolution of the moon about the earth.

Moon Movement: Rotation and Revolution

Illustration of Moon Movement. (Photo: https://pixabay.com)

The rotation of the moon is the rotation of the moon on its axis. For one rotation, the moon takes 29.5 days or 1 month. The period of the moon’s rotation is the same as the period of the moon’s revolution around the earth. As a result of the moon’s rotation, the surface of the moon looks the same from Earth.

Unlike the rotational movement, the lunar revolution is the rotation of the moon around the earth. Excerpted from the book Sure Can Science Nature for SD/MI Class VI written by the Tunas Karya Guru Team (2018: 73), the time it takes the moon for one revolution is the same as the time it takes the moon to make a rotation, which is 29.5 days or 1 month. As it evolves, the area of ​​the moon exposed to sunlight will vary. This phase of change in the appearance of the moon is called the moon phase.

The result of the moon’s revolution is the occurrence of high and low tides. The full tide occurs when the full moon and new moon, while the new tide occurs during the half moon.

In addition to the motion of the moon’s revolution around the earth, the moon also revolves around the sun. The time of revolution of the moon around the sun is the same as the time of revolution of the earth. So in 1 year, the moon moves 1 time around the sun and 12 times around the earth. This is why there are 12 months in 1 year in the Gregorian calendar.

The phase of the moon or the phase of change of shape (position) of the moon includes the new moon, half moon, full moon, half moon. For a month, each phase takes 7.5 days. Such is the brief explanation of the movement of the moon: rotation and revolution of the moon. I hope this information is helpful! (CHL)

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