2006-10-02 08:21:43 · 8 answers · asked by Aimee L 1 in Science & Mathematics ➔ Astronomy & Space
On earth water seeks its own level but on a global basis what looks flat in the kitchen is actually a sphere. The rocky planets at one time were molten enough for gravity to pull all surfaces toward the center of mass forming a globe. Gaseous planets are spherical because their powerful gravity acts on gas just like the earth acts on ocean water (and our atmosphere too!).
2006-10-02 08:52:48 · answer #1 · answered by Kes 7 · 0⤊ 0⤋
Because of the gravity's magneticism. The planet is not exactly round, however it is that it pulled evenly and few mountains were formed. Earth's orbit too, it spin sideways like a sphere, and gravity getting stronger that large objects can crush to pieces under their own weight than sticking it, a create a bulge at the equator because of the spinning force.
2006-10-02 15:32:09 · answer #2 · answered by Eve W 3 · 0⤊ 0⤋
Gravity acts in all directions so that a sphere is the most natural 3 dimensional object that could occur.
2006-10-02 08:39:08 · answer #3 · answered by FrogDog 4 · 0⤊ 0⤋
When a body in space becomes big enough, it's gravity becomes strong enough to pull equally in all directions creating a sphere shaped body.
2006-10-02 09:09:02 · answer #4 · answered by gfminis 2 · 1⤊ 0⤋
gravitational conservation of mass distribution. and due to the rotation of the earth, we live on an oblate spheroid - despite gravity, the equator bulges outward due to rotational forces. more 'roundness' is generally seen in the gas giants in our solar system.
2006-10-05 17:11:25 · answer #5 · answered by BrettO 2 · 0⤊ 0⤋
It's the most stable form for a mass, raindrops are round.
2006-10-02 08:26:00 · answer #6 · answered by Kainoa 5 · 0⤊ 0⤋
Becuase gravity pulls it into a sphere.
2006-10-02 11:22:17 · answer #7 · answered by That one guy 6 · 0⤊ 0⤋
Due to the constant pull of gravity inward.
2006-10-02 08:55:21 · answer #8 · answered by bruinfan 7 · 0⤊ 0⤋