2007-10-07 21:26:10 · 8 answers · asked by christina 2 in Science & Mathematics ➔ Earth Sciences & Geology
No - not gravity - that just keeps us in orbit.
I'm assuming you mean our rotation and our orbit around the Sun.
It's something called angular momentum that was imparted to the Earth (and all other bodies in the universe) when it was created.
Due to the laws of conservation of energy, the Earth will keep moving until something stops it or slows it down, in which case the energy (the angular momentum) will transfer elsewhere. For example, when we use the Earth to "sling-shot" a space probe out into space, the probe actually steals some of the Earth's energy and we slow down a minute amount.
2007-10-07 21:33:37 · answer #1 · answered by the_lipsiot 7 · 1⤊ 0⤋
According to the theory of conservation of momentum,the rotation and revolution of the earth must have originated at the time it formed(solidified) from a revolving disk of hot gases called solar nebula.Rotation in the same sense(same direction) as the revolution of the earth should have been the natural dynamical motion where no or least resistance is encountered.
2007-10-08 05:01:24 · answer #2 · answered by Arasan 7 · 0⤊ 0⤋
inertia says that a moving object will continue moving unless a force is applied to it..
besides, if the earth stops moving, it will be pulled towards the sun..
hot..
2007-10-08 04:41:24 · answer #3 · answered by raine 1 · 0⤊ 0⤋
Relative to what? Relative to the sun, gravity keeps the earth in orbit around it. Relative to the moon, the moon orbits around the earth. Relative to galaxies other than the one we are in, they are all rapidly expanding away from each other (due perhaps to the big bang). You need to define your question better.
2007-10-08 04:30:45 · answer #4 · answered by alexhobart2004 3 · 0⤊ 0⤋
Gravitational forces present in the universe.
2007-10-08 04:30:00 · answer #5 · answered by Ehsan R 3 · 0⤊ 0⤋
The gravitational pull from the sun and the pull from other planets think, I think its called Coriolis Effect.
2007-10-08 04:29:43 · answer #6 · answered by ? 4 · 0⤊ 1⤋
Just this simple... LAW OF INERTIA
2007-10-08 05:19:19 · answer #7 · answered by Anonymous · 0⤊ 0⤋
The ***INERTIA***
2007-10-08 04:36:14 · answer #8 · answered by IT 4 · 0⤊ 0⤋