ANSWERS: 25
  • Spheres were on my mind at the time.
  • as an affront to god and his infallible pope who was so sure it was flat
  • So we couldn't walk off of it. The solar system would freak out if it had to turn a corner.
  • Because if it wasn't, gravity would pull in some of the parts sticking out until it was really close to a sphere the way it is now.
  • Just to tick off Fundamentalist Christians who believe in Biblical innerancy. It's the Goddess' way of thumbing her nose at them. :)
  • because there was loads of dust in space from a sun that had exploded. The main force pulled alot of the dust into a big fiery ball (the sun) but the dust that was to far away so it was molded with more gravity into balls (the earth and the other planets). YAY hope i got it right xxxxx
  • A sphere is the most effective shape for size and surface area.
  • The earth is mostly round. It's not a perfect sphere, as it's slightly off - some bits stick out further than others. The top of Mount Everest is 8.9km above sea level, the deepest part is the bottom of the mariana trench, which is 11km down, so there's 20km, or 12.5 miles from the highest point on the earth's crust to the lowest. A rough sphere is the shape you could expect as all the objects in a dust cloud around a new star collide from any and all directions, and sometimes stay together, forming larger objects with larger gravitational pull, causing more dust to fall in closer. You can see a similar effect with another force - magnetism; if you get a lot of iron filings near a magnet, they won't all stay in their original positions, they'll all get pulled in and over each other to get closer to the magnet itself. If you get iron filings from lots of directions, the magnet ends up pretty evenly covered. It's not exactly the same, but you can get the idea by seeing it in action.
  • Y'all are wrong. The earth is flat. Otherwise, people on the other side would fall off into space. Duh!
  • Well.....if it was square. We would'nt be considered humans......we'd be "The Borg" and resistance would be futile..........
  • why is the sky blue? why is the grass green. well the grass is green from chlorophyll...and the blue color of the sky is due to Rayleigh scattering. As light moves through the atmosphere, most of the longer wavelengths pass straight through. Little of the red, orange and yellow light is affected by the air. However, much of the shorter wavelength light is absorbed by the gas molecules. The absorbed blue light is then radiated in different directions. ok so there must be an explanation to the earth being round then: This is due to gravity. Gravity pulls with equal strength in all directions; therefore any variations from a spherical shape will lead to gravitational forces that bring the shape back into that of a sphere.
  • dear unknown, the earth is a sphere, not a circle! ;)
  • For the same reason that the sun and moon are circles. Human vision cannot combine such large, faraway objects into 3-D images. So such objects in space end up looking like circles. Also, you can only see a small circle of the earth from any point on it.
  • Equal gravity causing equal settlement of materials at formation in all likelihood.
  • it's not a sphere or a circle. It's an oblate spheroid
  • Because of the principle of equilibrium in physics. However, the Earth is not really a circle (2 dimensional) true sphere (3 dimensional), it has a slightly oval or egg shape.
  • The sphere is the most efficiant way to enclose a volume. This means it has the smallest amount of surface area for the volume it encloses. Mother Nature love efficiant and uses it whenever possible. A raindrop is a shpere distorted by its motion through the air. The earth is a oblate spheroid because it is a sphere distorted by the centrifugal force of it spin. Or shorter answer. Thats the way nature works.
  • The earth is actually shaped like an oblate spheroid. Which means that it's somewhat shaped like an egg with a little puff around it's belly. When a mass such as the earth continually spins on it's axis it's gravitational force causes the matter that makes up this mass to becomer denser as time goes on creating a stronger gravitational field. At some point the earth was believed to have been round. However, this shape has (and still is) changing due to the force of gravity of the earth, it's constant rotational pull, and other masses in the universe which also contain a gravitational field.
  • In manners of speaking....earth is not round
  • Gravity.
  • easy to rotate on its axis...
  • Earth is actually not perfectly round but oval ( there's more mass around the equator up to 5 km I think than on the north and south poles). The earth is "round" because that's how it was made. Gravity pulls one object to another, and then it makes (or tries to) a center of gravity in the center of the mass, thus making a planet/moon circular. The earth was really hot when it was formed, so gravity didn't have that much of a problem molding it into a ball, and since it rotates, the equator got extended a bit (just like on a mary-go-around). And since Earth is truly big, then gravity is big, I mean come on, 9.2 m/s2 is pretty damn fast. Plus it holds a fuckin' moon a little bit smaller than Mars on its orbit. Being "round" (oval) is not surprising. Gravity here is big, but maybe not as big like on Jupiter lol
  • Because gravity forms any malleable object into a sphere. It's exactly the same reason why, when you release water into a weightless environment, it eventually forms a sphere. Gravity attracts all parts of the surface to an equal extent - there is no way it can form any other shape, unless, like some asteroids, it is small enough so that the pull of gravity is not enough to overcome its internal structure.
  • tu kyun tension leta hain yaar
  • to a approximation, the earth is round.this is because of gravity,because gravity pulls with equal strength in all directions; therefore any variations from a spherical shape will lead to gravitational forces that bring the shape back into that of a sphere. This is without considering the rotation of the earth.The rotation of the earth adds centrifugal effects, which cause the earth to bulge slightly at its equator and flatten slightly at its poles.Because of these centrifugal effects, the distance from the center of the earth to the surface of the earth is about 0.33% shorter at the poles compared to the equator.=]

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