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Q: How is the shape of Earth described?
  • A. Circular
  • B. Oval
  • C. Oblate Spheroid
  • D. Spherical
Correct Answer: Option C - The oblate spheroid, or oblate ellipsoid, is an ellipsoid of revolution obtained by rotating an ellipse about its shorter axis. It is the regular geometric shape that most nearly approximates the shape of the Earth. A spheroid describing the figure of the Earth or other celestial body is called a reference ellipsoid. It is slightly flattened at the poles. That is why, its shape is described as a Geoid. Geoid means an earth-like shape.
C. The oblate spheroid, or oblate ellipsoid, is an ellipsoid of revolution obtained by rotating an ellipse about its shorter axis. It is the regular geometric shape that most nearly approximates the shape of the Earth. A spheroid describing the figure of the Earth or other celestial body is called a reference ellipsoid. It is slightly flattened at the poles. That is why, its shape is described as a Geoid. Geoid means an earth-like shape.

Explanations:

The oblate spheroid, or oblate ellipsoid, is an ellipsoid of revolution obtained by rotating an ellipse about its shorter axis. It is the regular geometric shape that most nearly approximates the shape of the Earth. A spheroid describing the figure of the Earth or other celestial body is called a reference ellipsoid. It is slightly flattened at the poles. That is why, its shape is described as a Geoid. Geoid means an earth-like shape.