why earth is roound shape?
605515
It is not exactly round, just looks that way.\n\nSee webpage below for the correct shape.
12606
Our world, Earth, is a planet, and planets are round because their gravitational field acts as though it originates from the center of the body and pulls everything toward it. With its large body and internal heating from radioactive elements, a planet behaves like a fluid, and over long periods of time succumbs to the gravitational pull from its center of gravity. The only way to get all the mass as close to planet's center of gravity as possible is to form a sphere. The technical name for this process is "isostatic adjustment."\n\nIf the shape of the Earth were due solely to gravity it would be a perfect sphere (round in 3 dimensions) but it's not, the Earth is shaped like what is called an oblate spheroid. As the Earth spins on it's axis, it produces a centrifugal force that pulls away from the Earth (in opposition to gravity)  at 90 degrees from the spin axis, this corresponds to the equatorial regions. So the Earth bulges out a little around it's middle.
1119337
The geological makeup of the Earth to begin with! It isnt a perfectly balanced orb. Secondly, the orbit of the moon and any other objects in the solar system with enough mass. Get your toy top out. A top is  not a perfectly balanced object. It would be impossible to attain this. Spin the top and watch its balance decay. Same principle.
821321
All the mass on the earth is being pulled in by gravity, you and me included. the more mass you have the more an object pulls towards itself and others (basically heavy things have a sort of pull, so when you are by a huge mountain you are actually being pulled towards it) \n\nThe easiest way of all the mass to be pulled together is in a sphere, there are no corners and its cannot be compressed without other areas moving further away from the centre, so theoreticlaly the earth SHOULD be a sphere\n\nBUT it isn't; due to its rotation it is fatter than it is tall, because of mass being moved out by centrifugal force. \n\nhope this helps
410954
The Earth is round.\nObviously at lower latitudes you view the moon from a different angle than what you would at higher latitudes.\nSo that at the equater the moon when rising would look like a bowl from that angle in that phase.
157120
This goes along with the question of why don't we fall off the earth if it is round. The answer is because gravity is holding us (and the water) down.
57491
because of gravity, pulling inward with the same force in all directions, giving them a round shape.\n\nyou look very pretty in your avatar by the way ;)
27423
There are a few main parts to the earth. The earth is like a tootsie pop: a hard crunchy exterior, and it is soft inside. They are in roughly concentric spheres. The main layers of the earth are called the crust, the mantle and the core. \n\nThe outside shell of the earth is called the crust. The crust is about 5-60 kilometers thick and forms about 1% of the volume of the earth. We live on the crust. \n\nUnder the crust is a very large part of the earth called the mantle. The mantle is about 84% of the volume of the earth. The mantle is about 2800 kilometers thick.\n\nInside the mantle, is the soft middle of the earth, called the core. The core is roughly a round ball, and is about 15% of the volume of the earth, and has a radius of about 3400 Km. \n\nOf course, one can get much more detailed, but this is enough to give you a start, so you can understand what you read on the internet.
811234
Because the Earth is round, the widest point could be from top to bottom.... it all depends on which way you are looking at it.
791325
Most are actually more ellipsoid in shape (i.e. not perfect spheres).\n\nI'm no astronomy/physics expeert, but I think it has something to do with gravity and rotational forces.
9937
It's because the world in question is ruled by unicorns and merry elves. In "that" world it's only natural that everything is either square or circle. Here of course we have irregular shapes and other geometrical figures like triangles, trapezoids and such. Must sound very strange to you I believe.\n\nUs earthlings, we have strange ways.
862988
Earth and the other planets were formed from a giant cloud of gas and dust revolving around the primitive sun. As in any other moving fluid, local whirlpools kept appearing and disappearing all the time. \nAs the cloud started to cool, local perturbations caused density variations : some whirlpools got lumpier than others, just as in a bowl of porridge when it cools off. They thus grew more stable and accumulated more matter because of their increasing gravity. On further cooling, these separated out as planets, molten globes of matter still spinning furiously.\nEven when the planets solidified at last, they retained a part of their original spin. That's why the Earth and the other planets are still spinning around their axes. That's what, thankfully for us, creates days and nights.
384998
Because gravity acts pretty much in a straight line.  As the swirling dust clouds collected into the earth, the particles acted on each other to form clumps, and the clumbs attracted to each other, then you end up with a nucleus of matter imparting a gravity field radially out from the centre.  Things will be colliding with the nucleus from all directions with an equal probability and thus a sphere.
9991
To a first-order approximation the Earth is round.  This\nis due to gravity.  Gravity pulls with equal strength in all\ndirections; therefore any variations from a spherical\nshape will lead to gravitational forces that\nbring the shape back into that of a sphere.\n \nThis is without considering the rotation of the earth,\nhowever.  The rotation of the earth adds centrifugal\neffects, which cause the earth to bulge slightly at\nits equator and flatten slightly at its poles.\n(This is like twirling a rock on the end of a string\nand then letting go--the rock flies away from the\ntwirler.)  Because of these centrifugal effects, the\ndistance from the center of the earth to the surface\nof the earth is about 0.33% shorter at the poles\ncompared to the equator.
314986
To a first-order approximation the Earth is round. This\nis due to gravity. Gravity pulls with equal strength in all\ndirections; therefore any variations from a spherical\nshape will lead to gravitational forces that\nbring the shape back into that of a sphere.\n\nThis is without considering the rotation of the earth,\nhowever. The rotation of the earth adds centrifugal\neffects, which cause the earth to bulge slightly at\nits equator and flatten slightly at its poles.\n(This is like twirling a rock on the end of a string\nand then letting go--the rock flies away from the\ntwirler.) Because of these centrifugal effects, the\ndistance from the center of the earth to the surface\nof the earth is about 0.33% shorter at the poles\ncompared to the equator.
124798
This has to do with the way the earth was formed. Dust particles gathering together and spinning at the same time. Spinning causes things to take spherical shape due to centrifugal force.
799943
because the earth is tilted