Our Earth is not round, as many of us being told by our elders. In fact, our Earth is not a perfect sphere due to its gravitational pull. It is not a sphere, but kind of pear-shaped. The real shape of the Earth is called 'Oblate Spheroid'. Where Oblate means 'slightly oblong appearance' and Spheroid means 'almost sphere', but not exactly for sure. The diameter from the North Pole to the South Pole (the shortest diameter) is approximately 12,714 km. The equatorial diameter (the longest diameter) is approximately 12,756 km. This is not a big difference, but it does make the Earth not quite a sphere.
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