weather the earth has less gravity at centre?
539221
Due to Newton's Law of Gravitational Force (see link), as the distance between two objects decreases, the gravitational force will increase exponentially.  \n\nIt all depends on your position in reference to the center of mass.  If you are on the surface of the earth, your distance from the earth is normally defined as the distance from you to the center of the earth, or center of mass.  \n\nAs you get closer to the center though, the force due to gravity changes differentially since your position in the mass itself is changing and gravitational forces are acting on you from various directions (the earth can be thought of as a sum of different aggregate masses at this point).  Therefore, the gravitational force of the earth will be "less" at the center, since the sum of all aggregate forces would be acting in opposition of each other.  However, since gravity is a relatively weak force, it would not be your biggest concern, because, at the center of the earth, it's not the force of gravity on you that matters, it's the pressure and temperature that will kill you.\n\nMagnetic and gravitational forces are completely separate types of forces and should not be considered in the formulation of this answer.
954663
it has gravity indeed, but less than earth\n\n:> peace\n.
750556
While the question/answer below is about weather, the information is the same for just wind.\n\nQ: Why does most of our weather come from the west if the Earth is rotating the opposite way?\n\nA: When looking down at the North Pole, the Earth spins counterclockwise around its axis. A point on the equator travels at about 1,100 mph, while a point directly at the poles does not move at all. An apparent force called the Coriolis force results from this difference in speeds, deflecting objects to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. The Coriolis force, combined with solar heating patterns across the Earth, create distinctive wind patterns that drive weather systems.\n\nOne prevailing surface wind pattern that results is located in the mid-latitudes, between 30 and 60° North. Solar heating alone, without the Earth's rotation, would produce prevailing southerly winds. The Coriolis force, however, deflects these winds to the right, creating prevailing winds out of the west and southwest (the westerlies). \n\nSolar heating patterns in the tropics, from the equator to about 30° North, combined with the Coriolis force, produce weak prevailing winds out of the east (the easterlies). Southern regions of the USA, including Florida, are affected by the westerlies at times and the easterlies at others."\n\nHope this helps explain it. Check the first link for other weather questions and second link to see a full explanation of the consequences of rotation on weather. \n\nSource(s):\nhttp://www.usatoday.com/weather/resource...\nhttp://csep10.phys.utk.edu/astr161/lect/...
1091336
Things would weigh less than on earth\n\nst
458635
It is warmer closer to the surface of the earth b/c of gravity & air acting as an insulator. Sounds strange???\n\nLet me explain...\n\nAir holds heat. It is an insulator.\n\nMost of the air is found in the troposphere, the layer closest to the earth's surface. Why???\n\nAir has mass just as we do. All objects having mass obey the laws of gravity.\n\nSince gravity is greatest closest to the surface of the earth, the gas molecules in the air will be pulled more closely to the earth.\n\nSince the insulator (gas molecules) is closer to the surface, heat will be held at the surface.\n\nThe higher you go, the less gravity & therefore there will be less air & less heat.\n\n:)
655853
Precession! The shape of Earth’s orbit becomes more or less oval (eccentricity), Earth wobbles as it spins (precession), and Earth's axis changes too (tilt). All these changes, over thousands of years, causes Earth's climate to change.
404666
By the pull of earth's gravity
1095694
The air around the planet is a viscous fluid and will travel with the rotation of the earth.  This does not take into accounts things such as wind currents or the jet stream which are different things.  There is a little bit of lag in the higher altitudes but its negligible
251177
I think,to a good approximation, at the centre you would not feel an appreciable gravitational field from the mass of the earth. \n\nIt's a nice result in physics that if you're on the interior of a spherical shell of mass then you feel no gravitational force. You can think of the centre as being surrounded by layer after layer of spherical shells of radius ~0 up to the radius of the earth.\n\nIf you do the calculation, once you start going interior to the earth the gravitational attraction varies linearly with distance from the centre-going from 9.81m/s^2 at the surface to 0 m/s^2 at the centre.\n\nOutrageous!
334932
The axis of the earth shifts seasonally.
835352
Gravity is an inverse square law for the further you are from the centre of mass the lower the graviational pull you feel. So yes gravity is less on the top of a mountain (and this has been measured) also these would be less air resistance as the air is of a lower density. These two factors would allow you to jump high, assuming you were on oxygen.
150657
gravity is highest at the centre of the earth. so you will be accelerating towards the centre.since there is no resistence (assume so that there is no air), you would not stop at the centre due to inertia of motion and continue to go beyond the centre to teh other side. but due to increasing pull on you, you will turn back and continue to oscillate about the center of the earth.\n\nits good for theory but humanly imposible
887515
Please be warned - there are MANY incorrect responses above.\n\nThe theoretical answer to your theoretical question is that you would be weightless at the centre of the earth because the forces of attraction would exactly cancel out.\n\nTo address some of the errors above:\nYou would not be pulled apart because the mass of the earth is not enough.  Similarly, you are not pulled apart when standing ON the earth, even though the earth is pulling your feet more strongly than your head.  If the earth were enormously massive then you would be (it's called being spaghettified, although it ought to have a different name if you are the centre!).\n\nThe force of attraction does NOT increase as you get closer to the centre of the earth.  The responder is thinking about Newton's Law of Gravitation which applies to POINT masses.  If you apply it to a large body such as the earth then you find that only the sphere underneath you attracts - the rest of it cancels out.  ie The earth is roughly 6400km in radius.  If you are 5000km from the centre then you will feel the force of attraction of a 5000km radius sphere of the Earth at a distance of 5000km - the force of attraction of the remaining 1400km 'shell' exactly cancels out.\n\nYou would not 'feel' the force of the sun (any more than you do on the earth) since its force of attraction is providing the centripetal force required to move you in a circle around the sun.\n\nThe force of gravity is NOT caused by the rotation of the earth.  In fact, if the earth stopped rotating we would all be a little bit heavier since a part of the force of gravity is being used to provide the centripetal acceleration necessary to keep us spinning around once per day, with the earth (on the equator this amounts to about 0.3%).\n\nYou also ask about gravitons!!  How they work is a difficult question since they are theoretical!  According to classical Newtonian theory, gravity is simply a fundamental property of matter - matter attracts other matter and that's that.  Newton himself was always uncomfortable about the idea of "action at a distance" but even his genius could not solve the problem, given the limitations of the time that he lived in.  Along came Einstein and gave a solution - matter distorts the shape of space and the apparent force of gravity is actually simply the result of an object moving in the distorted space.  Think of a heavy ball on a rubber sheet and another ball moving along.  It does not 'know' about the heavy ball but it changes its path towards the ball because the surface on which it is rolling has been distorted.\n\nThe graviton is an attempt to explain the phenomenon of gravity without recourse to considering distortions of space-time.  Bodies with mass emit particles called gravitons.  They interact with other massive particles.  The degree of ineraction can be calculated and reasonably easily represented on a Feynman diagram.  Try an internet search.  Huge tanks full of washing up liquid have been built down abandoned deep mine shafts to try to detect these particles.  Some 'events' have been noted but they remain elusive, as far as I know.\n\nHope this goes some way to answering your interesting questions.
373975
The Earth is not a perfect sphere so you are at different distances from the centre at different places.\nThe density of the Earth is not constant so above dense rocks you appear slightly heavier.\nThe Earth spins so at the equator you are lifted slightly by the Eotovos effect.
1135266
The gravitational pull of the earth pulls everything toward the center of the earth.  Everything that has mass has some kind of gravitational pull.  The larger the mass the larger the gravitational pull.  Since nothing on earth has more mass than Earth everything is subjected to gravity.  Since the sun has more mass than the Earth it is able to pull the Earth and it stays in an orbit (this is why Earth doesn't just fall into the sun).
329853
The earth is on an axis so the sun doesnt cover the northern and southern regions as well ........i meant the polar regions in this statement
131841
The seasons would be far milder. There probably still would be some seasonal variations because the earth is not always the same distance from the sun.\n\nAlso, it should be noted that even if the axis of rotation was oriented to be normal to the ecliptic, there is still a 435 day period Chandler Wobble to the earth's axis, caused by redistribution of mass on the earth's surface (and presumably within the earth as well) and the conservation of angular momentum.