2006-11-10 00:19:55 · 7 answers · asked by greatgauravarora 1 in Science & Mathematics ➔ Astronomy & Space
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.
As 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.
Even 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.
2006-11-10 02:09:07 · answer #1 · answered by Problem Child 2 · 0⤊ 1⤋
Due to the gravitational pull of the sun, earth revolves around its axis and also rotates around the sun.
2006-11-11 00:53:36 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The Earth rotates on its axis. It revovles around the sun. As for why, I think it's a result of the gravational pull of mostly the sun, but also other celestial bodies.
2006-11-10 08:27:52 · answer #3 · answered by Albert 6 · 0⤊ 2⤋
When the Earth and other planets formed in a cloud, they were all spinning. The Earth spins do to inertia.
2006-11-10 11:44:23 · answer #4 · answered by bldudas 4 · 0⤊ 0⤋
Its because of the gravitational forces acting in the Universe
2006-11-10 08:24:02 · answer #5 · answered by Anonymous · 0⤊ 2⤋
Becuase it is bounded by sun's gravitational force
2006-11-10 08:29:41 · answer #6 · answered by Saurabh 1 · 0⤊ 2⤋
i think it is due to manetic forces of earth
2006-11-10 09:03:17 · answer #7 · answered by Anonymous · 0⤊ 2⤋