why is earth in round shape why it should not be square?

Answer 1

Out of all the multi-dimensional geometric figure,sphere has the least surface area.Thus all particles try their best to attain a spherical shape in order to reduce their surface area.It is for the same reason that when you pour any liquid in space, they attain a sherical shape.
But this is not the case with solids since their molecules are compactly packed and cannot be displaced.
When a new star is born,the gas clouds around it condenses to form planets.The dense gas passes through three states; the gaseous state,the molten liquid state and finally the rigid solid state.When a planet is in the first two states,it attains the spherical structure due to cohesive force(the force of attraction between the molecules of same element,which brings the molecules together).
Later the molten planet solidifies into a rigid planet like Earth.

Answer 2

Actually the earth is not really round. It is more ellipsoidal because the poles have kind of collapsed in towards the center. That is why the poles have days of complete darkness. Don't ask me how I know this!

Answer 3

how about the theory of the bubble
a structure will take the shape that has the least surface area
and a sphere has the least surface area thus earth is round

Answer 4

i believe it is because the gravity pull thing from all 360 degree direction together, and it turns into a round shape of earth.

Answer 5

Because a SQUARE Earth wouldn't rotate to stay in orbit, it would wobble,(even worse than it does now), sheeesh!

Answer 6

the sharp edges of a cube are not as structurally stable as a sphere

Answer 7

gravity pulls equally anywhere...therefore, if you put same materials everywhere and have one point that pulls everything to it (our core), then it will form a sphere...