What is the cause of rotation in earth?

Answer 1

It starts when dust and gas start to coalesce within a nebula. As the material gathers closer together, it starts to spin due to increased gravitational forces, thus increased speed. This is called the Law of Angular Momentum. The star eventually becomes large enough to have its own significant gravitational pull. This causes other objects to become trapped by the star. If an object(s) big enough passes through, it will get caught. However, this object(s) would have its own gravitational force large enough in also inluence the star. This creates a central point in which the two bodies revolve around. This point is not necessarily the middle of the star.

Answer 2

The rotation of the Earth is caused by the conservation of angular momentum from the initial formation of the solar system. As the Earth formed from the rotating disk of gas and dust around the Sun, this rotation was inherited by the planet. The Earth's rotation continues due to inertia and the absence of significant external torques.

Answer 3

Conservation of angular momentum.

If you mean "why does it rotate on its axis instead of on something else", that's because whatever it rotates on is by definition its axis of rotation.

Answer 4

This is not a complete answer, because I'm in a hurry. The wind patterns are

not simple, and a lot depends on latitude. The "Coriolis effect" is very important.

The Coriolis effect is caused by the Earth's rotation.

I know a complete explanation involves mathematics, unfortunately.

Answer 5

Nothing short of a planet-busting impact with an enormous asteroid could alter the Earth's rotation suddenly.

However, a carefully timed series of gravitational "slingshot" maneuvers could, over the course of a couple of million years, gently slow down the Earth's rotation. You would still need an enormous asteroid, and titanic engines to bring the asteroid back into repeated close approaches to the Earth. Each approach would be calculated to transfer a little bit of the Earth's rotational energy to the asteroid, much as NASA uses "gravity assist" maneuvers to speed space probes on their way to distant planets.

Science Fiction writer Larry Niven uses this mechanism in his book "A World Out Of Time" to move the Earth from its current location in the solar system into orbit as a moon of Saturn.

Answer 6

Good question. We cannot be certain of the cause of the Earth's rotation; perhaps the spinning nebular cloud from which the Earth, the Sun and the other planets all formed each imparted the spin to the planets.

More likely, the Earth spins because of a titanic collision between another planet and the proto-Earth some 4.2 billion years ago. In that collision, the Earth was remade out of the fragments of the two original planets, and the debris left in orbit coalesced to form the Moon. we believe that the collision would have been off-center, and this could be the cause of the Earth's axial tilt and rotation.

Answer 7

In the northern Hemisphere, wind directions average clockwise around a center

of high pressure and counterclockwise around a center of low pressure.

In the Southern Hemisphere, wind directions average clockwise around a center

of low pressure and counterclockwise around a center of high pressure.

All of these effects are results of Earth's rotation.

If Earth didn't rotate, wind directions would average directly toward a center of

low pressure, and directly away from a center of high pressure, anywhere on

the planet.

Answer 8

Tidal forces between the Sun and the Earth cause friction in Earth's surface - sort of a rippling - that slows the orbit. It is easier to see these tidal forces acting on the water in our oceans than it is to see in our land, but they are there.

Answer 9

The Earth almost certainly cannot stop spinning. The rotational momentum of the spinning Earth, like any other forms of energy, can neither be created nor destroyed, but only converted into a different form of energy.

Answer 10

The Earth's rotation is the direct cause of day and night

as experienced on the surface.