How come the Earth is a sphere instead of a cube?

Question

And the same to other planets. What would happen if the Earth is cubic or a triangular prism?

Answer 1

Who told you that? Are you sure it's not a cube?

Actually, gravity accounts for the shape. It pulls with constant force toward the center. As the earth took shape as a forming planet, all pieces were pulled toward the center, naturally forming a sphere.

Answer 2

As for the "what if" question, an earth-bound observer would feel no astounding difference between a spheroidal earth and a cuboidal or tetrahedral earth. Gravity is gravity, it will always act on an object by pulling it towards the center of another body. The only problem with, say, a cubic earth, is at the edges, which will appear as a mountain range.

Answer 3

That couldn't happen. When planets are forming and gravity pulls great clouds of interstellar dust together, it does so in the freedom of three-dimensional space. Particles attract each other from all sides, and these clouds eventually begin rotating. This rotation and the complex relationship of gravitating particles in the cloud "rounds off" any would-be corners from a planet, resulting in the spherical (or, to be more precise, in Earth's case, an oblate spheroid) shape with which we are familiar. It's no accident; it's physics!

Answer 4

earth is sphere because every point on earth's surface is equidistant from center. we know that earth gravitational force is in its center. so it attracts objects towards it . so the object will try to go as much near center as it could. let us suppose there is a surface which has a curve in its center. now through a ball , it will go and will stay at the center. if a round magnet kept in the center of a paper full of iron fillings, the iron fillings will attach to it and will form a sphere because force applied is similar in all directions. like this , earth is also a sphere and not a cube.

Answer 5

Just like a droplet of water in space.... it forms into a rounded structure because the gravity ( electro-attraction on the sub-atomic level ) of the object is resisting a uniform but opposite force from the surrounding vacumn of space. Bigger the planet
( not gas gaints ) more gravity.

Answer 6

Well, in the universe, all objects want to attain minimum potential energy. So, when earth or other celestial bodies were hot and in liquid form, they took spherical form. After they congealed, the spherical form remained.

Earth is actually not exactly spherically. The equatorial diameter is more than the polar diameter. This is due to the centripetal force caused by earth's rotation

Answer 7

This is due to gravity pulling all parts of earth towards the same spot with the same gravitational pull

Answer 8

we'd be limited to the midsection of six huge,sq. plains. the floor could be so perplexing that no longer something ought to penetrate it. the ambience could be around with the 8 corners poking up with the aid of it. climate could be limited to all of the six plains.. traveling to a distinctive undeniable could be distinctly much impossible aside from expert mountain climbers. no remember which way you went you would be going uphill. we are fortunate the essence of the earth is comfortable adequate to sort a globe.

Answer 9

The Earth isn't a sphere, it is an Oblate Sphereoid.

Answer 10

because gravity is pulling everything into one point which is the center of gravity