what is the reason for earth,subatomicparticals rotation on their axis from where they get the energy for this
915719
Subatomic particles do not spin on their axis. What is called spin is actually a misnomer, given because it was originally thought that the only origin of the megnetic moment of the particles could be that they spin on their axis. In fact, spin magnetic moment arises naturally out of the Dirac equation (the relativistic form of the Schroedinger equation) with no rotation at all.\n\nThe Earth spins because the cloud of matter that it and the solar system condensed from was rotating, and angular momentum is conserved.
198471
The Earth’s rotation axis is not perpendicular to the plane in which it orbits the Sun. It's offset by 23.5 degrees. This tilt, or obliquity, explains why we have seasons and why places above the Arctic Circle have 24-hour darkness in winter and constant sunlight in the summer.\n\nBut the angle is not constant – it is currently decreasing from a maximum of 24 degrees towards a minimum of 22.5 degrees. This variation goes in a 40,000-year cycle.
285187
The are round, in short, because it takes the least enegry to do it.\n\nGravity pulls the matter that will make up the planets/sun/... together.  All the forces are pointed towards to the objects center of mass, everything is being pulled inward toward the center.  With everything trying to get as close as possible to the same center of mass, the object develops a round/sphereical shape.  This shape minimizes the amount of potential energy the matter has above the center of mass.\n\nThe reason why some objects (like the Earth for example) as not totally sphereical is because they are roating around an axis.  Since the Earth is rotating on its axis (causing our days and nights), there is a bulge around the equator as the matter located there is rotating faster [tangential speed] than the matter located at the poles.  This faster tangential speed requires more centripetal force [not to be confused with the fictional "centrifugal" force] or order to keep it rotating.  In order to lessen the required force, the matter bulges out a little bid, increasing its radius away from the axis.\nCentripetal force = m(v^2/r),\nyou can see that a larger radius (r) away from the center means a smaller centripetal force is needed.
60264
Our moon is locked in what is known as a geo-synchronous orbit. For millions of years the angular momentum has stablized the moon to provide very little loss of energy between earth and moon. This does not account for the influences that the moon has upon our oceans though. (Tides) Our solar system has "moved about" for many millions of years to allow for efficient energy transfers between baryonic masses.  This is not unlike a person who sit's in a chair and move's about to become more comfortable.  Peace
1142453
Well it's a natural phenomenon. If moon is not rotating then some thing else any where else in our solar system will do something to compensate for this energy.\n\nRemember : Energy can neither be created nor be destoyed and according to the energy conservation principle this energy will have to be redirected . So it can be millions of other possibilities :)\n\nLike days will be shorter ans earth rotates fast to use that excess energy or something like that.\n\n:)
882017
No one who has answered so far got it right.  The answer is TRUE, and the reason is because the moon rotates on its axis in exactly the same amount of time it takes it to make one revolution around the earth.  No one seems to get this.
59556
It's due to the formation of the planets themselves.  the gases and the dust spun around the sun as the star formed itself, and congealed into the planets we know.  And since they spun as they formed, they started the spinning on their axis as well.  \n\nBesides, we'd be either cooked or frozen if the Earth didn't revolve!\n\nHarley's wrong.  The moon DOES spin on an axis.  However, its spinning is on par with the Earth's spinning, thus you only see the one side of the moon.
324301
That's because the Earth's spin is caused by electromagnetics.  Something about the electrical properties of these gasses in our atmosphere causes them to be spun around faster than the rest of the Earth.
755454
I answered this yesterday, but...\n\nWhat makes the Earth Spin...\n\nAngular Momentum. Think of a figure skater pulling their arms closer to their body while spinning, sudennly they are spinning VERY fast, then they let their arms out, and they slow down. This is because the arms still have the same amount of rotational energy as they did when they were further from the body, but when they are pulled close, they don't have as far to go to complete one rotation... the radius and circumference are smaller but the distance covered is the same over the same amount of time. This means faster rotation.\n\nHow does that have anything to do with the Earth? Simple. When the Earth formed, it formed by collecting bits of matter from space, and these bits of matter, ranging from dust to huge asteroids and larger, were all like tiny arms, adding rotational energy to the earth as they came in closer and stuck. \n\nRight now, the moon is slowing the earth's rotation as it slowly moves away from the Earth--again, this is the same process. How can this be when the moon doesn't even touch the Earth? Gravity. Gravity makes the earth and moon behave almost as if they were touching. The short explanation is that the center of gravity of the earth-moon system lies just below the surface of the earth, causing tides. Since the moon is moving away, it requires less orbital velocity to maintain it's orbit, and so the tides slow the earth more as the moon's orbital speed slows.\n\nEventually, the earth and Moon may both be tide-locked to each other, and this will happen long before the earth is tide locked to the sun (the tides have slowed rotation of the earth to the point where it always has one side facing the moon (or sun)).\n\nWhat makes the earth not stop spinning?\n\nAs mentioned before, angular momentum. The earth's surface can be slowed, but that energy has to go somewhere--it goes to speeding up the orbital velocity of the moon, which is why the moon is moving further from the earth...\n\nThe earth is moving around the sun because of the way the sun and all the other stuff in the solar system formed--from a cloud of gas and dust that collapsed into a spinning disk. The mechanics of the whole thing is still being learned and debated. As long as the Earth keeps moving in a straight line perpendicular to a line drawn between the Earth and the Sun, the Earth will continue to fall toward the Sun (by gravity) at exactly the same speed that it is flying perpendicular, and thus, like a ball on a string, it will follow a curved path around the sun.
464601
Earth revolves around the sun because the giant nebula out of which the solar system formed was spinning and the angular momentum is conserved, and earth spins because of the initial config. Why it revolves in an ellipse, see this\nexplanation at http://www.mathsnet.net/cabri/feynman.html
384998
Because gravity acts pretty much in a straight line.  As the swirling dust clouds collected into the earth, the particles acted on each other to form clumps, and the clumbs attracted to each other, then you end up with a nucleus of matter imparting a gravity field radially out from the centre.  Things will be colliding with the nucleus from all directions with an equal probability and thus a sphere.
1080909
Based on Newton’s First Law of Motion the Earth doesn’t use any energy to move.  An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.\nBy the way, 342 watts of energy is deposited from the sun into every square meter of the Earth.\n\nhttp://earthobservatory.nasa.gov/Newsroom/MediaResources/Energy_Balance.pdf\nhttp://www.glenbrook.k12.il.us/GBSSCI/PHYS/CLASS/newtlaws/u2l1a.html
407938
It is a factor in their formation. As matter gravitationally comes in proximity with other matter, the "pieces" start orbiting one another. As other pieces join the group, they influence all the other pieces in the group simultaneously, so the whole set of objects tends to change it's axis of rotation as a group. In the end, there is a cluster of objects that all tend to rotate within the same general plane or around the same axis of rotation.\n\nFor example, most of the planets in the solar system rotate on an axis that is very similar to their axis of revolution around the sun. This is because the "pieces" of mater that formed the solar system started rotating around (orbiting) one another in a single plane. As some of the pieces crashed into one another and combined into planets, stars, etc. some of the orbital energy was transformed into rotational energy, but with angular momentum in the same direction as the rotational energy. Thus revolution and rotation are generally in the same direction with similar axes.
248052
its the same as why does gravity not apply in the subatomic...when we know the answer a new dawning in science will amaze the world...
108530
Not all the planets do rotate on their axes with constant angular velocity (see reference) and even two rotate in the opposite direction to earth (counter clockwise when viewed from the celestial north pole); venus and uranus (called retrograde motion). \n\nThe rough alignment of all the angular momentum vectors in the solar system, including orbital and rotational angular momenta of all the planets, moons and the sun is presumably a left over relic from the angular momentum when the system was formed from a rotating gaseous collection of material.
431091
It is because of the Earth's rotation.
73287
The earth's magnetic field is generated by the molten core of the planet and provides us with protection from cosmic rays eminating from the sun.  The strength of the field is actually weakening, but not to worry there is evidence that this is a natural cycle and that at numerous points in geological history that the field has weakend#ed and reversed to what it is now days.