what is its shape?
Nearly spherical
Earth
The shape of Earth is nearly spherical. There is a small flattening at the poles and bulging around the equator due to Earth's rotation.
what is earth? Third planet from the Sun
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Earth [SEP] Shape
The shape of Earth is nearly spherical. There is a small flattening at the poles and bulging around the equator due to Earth's rotation. To second order, Earth is approximately an oblate spheroid, whose equatorial diameter is larger than the pole-to-pole diameter, although the variation is less than 1% of the average radius of the Earth. The point on the surface farthest from Earth's center of mass is the summit of the equatorial Chimborazo volcano in Ecuador (). The average diameter of the reference spheroid is . Local topography deviates from this idealized spheroid, although on a global scale these deviations are small compared to Earth's radius: the maximum deviation of only 0.17% is at the Mariana Trench ( below local sea level), whereas Mount Everest ( above local sea level) represents a deviation of 0.14%.