Cause. Earth is massive enough that the pull of gravity maintains its roughly spherical shape. Most of its deviation from spherical stems from the centrifugal force caused by rotation around its north-south axis. This force deforms the sphere into an oblate ellipsoid.
Planets are round because their gravitational field acts as though it originates from the center of the body and pulls everything toward it. ... The only way to get all the mass as close to planet's center of gravity as possible is to form a sphere
Even though our planet is a sphere, it is not a perfect sphere. Because of the force caused when Earth rotates, the North and South Poles are slightly flat. Earth's rotation, wobbly motion and other forces are making the planet change shape very slowly, but it is still round. How Does Earth Move?
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Answer:
The Earth is an irregularly shaped ellipsoid
Cause. Earth is massive enough that the pull of gravity maintains its roughly spherical shape. Most of its deviation from spherical stems from the centrifugal force caused by rotation around its north-south axis. This force deforms the sphere into an oblate ellipsoid.
Planets are round because their gravitational field acts as though it originates from the center of the body and pulls everything toward it. ... The only way to get all the mass as close to planet's center of gravity as possible is to form a sphere
Even though our planet is a sphere, it is not a perfect sphere. Because of the force caused when Earth rotates, the North and South Poles are slightly flat. Earth's rotation, wobbly motion and other forces are making the planet change shape very slowly, but it is still round. How Does Earth Move?