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Frequently Asked Questions: Earth's Shape, Movements, and Measurements

What is the true shape of the Earth?

The true shape of the Earth is an Oblate Spheroid or Geoid, meaning it is slightly flattened at the poles and bulges at the equator.

What is the difference between rotation and revolution of the Earth?

Rotation is the spinning of the Earth on its own axis, which causes day and night. Revolution is the movement of the Earth around the Sun, which causes seasons.

What causes the change of seasons on Earth?

The change of seasons is caused by the Earth's revolution around the Sun combined with the tilt of its axis (approximately 23.5 degrees).

What is the Earth's orbital plane called?

The plane in which the Earth revolves around the Sun is called the Ecliptic Plane.

How long does the Earth take to complete one rotation?

The Earth takes approximately 23 hours, 56 minutes, and 4 seconds to complete one rotation (sidereal day), but we commonly use the 24-hour solar day.

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