Earth is a terrestrial planet, meaning that it is a rocky body, rather than a gas giant like Jupiter. It is the largest of the four terrestrial planets in size and mass. Of these four planets, Earth also has the highest density, the highest surface gravity, the strongest magnetic field, and fastest rotation,[65] and is probably the only one with active plate tectonics.[66]ShapeMain article: Figure of the EarthChimborazo, Ecuador. The furthermost point on the Earth's surface from its center.[67]The shape of the Earth approximates an oblate spheroid,...