2007-02-20 01:02:01 · 19 answers · asked by jyyjmty g 1 in Science & Mathematics ➔ Astronomy & Space
Because the center gravity acts equally in all directions and therefore, pull the earth together in a spherical shape. (And the space time is wrap and curved.)And I think it is not a perfect sphere because there are other variables affecting the shape too.
Earth will be flat if the gravity is acting flat too like a disc.
2007-02-20 01:07:15 · answer #1 · answered by Anonymous · 1⤊ 0⤋
The surface of a lake may look flat however all the water molecules at the surface (neglecting waves) are on the surface of a giant sphere (the earth) and are all equally distant from the earth's center of gravity. At the shore you can actually see the curvature of the oceans especially if a tall ship approaches from over the horizon. When the earth was a molten blob, it formed into a near perfect sphere so that its entire surface was the same distance from the center of gravity. Even today rain falling on a mountain is pulled down by gravity to the lowest level possible and rivers run to the sea.
2007-02-20 01:30:20 · answer #2 · answered by Kes 7 · 0⤊ 0⤋
Nature has created everything in an economic way. Just take some pieces of clay each of the same volume and roll them into different shapes. You can see that the sphere takes up little space when compared to the others. This is probably why Nature created the earth, the sun, the planets, the stars in spherical shape, and not flat.
2007-02-20 01:07:24 · answer #3 · answered by Vikram K 2 · 0⤊ 0⤋
In the year 1662 some guy called Collumbus thought the earth was round and decided to prove it. Fortunately he was right. Gravitational attraction makes the planets sepherical. Metiors and comets change it slightly I would imagine the change in shape has something to do with the giroscopical effect the spinning thing has with the planet's shape.
2007-02-23 22:58:37 · answer #4 · answered by Think Tank 6 · 0⤊ 0⤋
Well the Catholic Church for decades deemed the Earth to be flat based on scripture. So if ya wanna believe old Catholic doctrine then go right ahead.
It would very difficult for any planet to have a rotation and an orbit if it is not spherical.
2007-02-20 01:08:59 · answer #5 · answered by Anonymous · 0⤊ 1⤋
Gravity over comes the structural strength of the earth's make up and pulls it round.
If it was 50 miles across it would be a big lumpy potato.
If it were bigger the mountains wouldn't be as high.
2007-02-20 02:53:46 · answer #6 · answered by Billy Butthead 7 · 0⤊ 0⤋
The Earth is a sphere because that is how everything is formed. The rocks and dust that formed Earth billions of years ago created a sphere.
2007-02-20 01:31:46 · answer #7 · answered by bldudas 4 · 0⤊ 0⤋
Gravitational forces are directed inwards (from the surface to the center). So in the process of making, planet Earth's materials, were coliding in the direction of today's Earth Core (the center).
So you have materials coming from all around into one place, and hop you have a spherical planet :)
2007-02-20 01:10:27 · answer #8 · answered by tomes12 2 · 0⤊ 0⤋
I don't know where you get your information,but the last time I looked' the earth was flat.
2007-02-20 01:07:19 · answer #9 · answered by Anonymous · 0⤊ 2⤋
i think it's because of the earth core's gravity it keeps on pulling each part of the earth inwards till it became the way it is now !
the question is why isnt it totally round ?!?
2007-02-20 01:05:58 · answer #10 · answered by OB5 2 · 0⤊ 0⤋