How is the Earths magnetic field generated?

Answer 1

A molten core of super heated metal (believed to be Iron and Nickel) is spinning at the center of the earth faster than the exterior of the earth is rotating.

Charged Particles create a magnetic field when they move.

Answer 2

Almost everyone here is wrong! The wire does not have to remain stationary as the earth spins beneath it to produce massive current. The core of the earth is rotating under the crust at several hundred miles per hour in relation to the crust. The Alaskan pipeline for example generates 1000's of amps and it is shunted to ground in some sections to prevent the pipe from generating too much power and oxidizing itself faster and possibly even melting if the entire length was ungrounded. In other sections that current is used to refrigerate the ice under the supports to keep them frozen in the summer so they do not sink into the mud as it thaws. The reason they do not tap this source was stated correctly though. They are concerned that a major industrial draw off the cores energy would affect the rotating core diminishing our planets electromagnetic field that protects us from cosmic and solar radiation. Do you really want to mess with something like that for some free electricity for a few generations? lol Anyway, you can do a simple experiment and just spool out 1000 feet of magnet wire in a giant loop oriented north and south in an oblong fashion and connect a meter to it's ends and you will get a voltage. Now imagine if it was a couple thousand miles long and as thick as the pipeline or thicker. That is also why long distance high tension power transmission lines run east to west as not to pick up a massive DC induced voltage. Also when they were testing the million hp rocket engines horizontally on the ground for the X1 experiments they always had U shaped exhaust pipes that would redirect the rockets exhaust 180 degrees so as not to affect the earths rotation from the engine being mounted firmly to the planet. Even though a million horse power is small they still didn't want to take any chances. Even slight changes can be catastrophic due to harmonic and centrifugal forces. If you don't know what it will cause it is better to err on the side of caution...I know this is an ancient post but all the arm chair physicists claiming it is impossible and stating ridiculous assumptions that the wire would have to be suspended so the earth could spin in it annoyed me! Slow people should not post responses! With any luck they will get filtered from the gene pool playing with microwave transformers or incinerate themselves making meth with the shake n bake method in a minivan! LMAO

Answer 3

The Earth's magnetic field is generated in the fluid outer core by a self-exciting dynamo process. Electrical currents flowing in the slowly moving molten iron generate the magnetic field. In addition to sources in the Earth's core the magnetic field observable at the Earth's surface has sources in the crust and in the ionosphere and magnetosphere. The geomagnetic field varies on a range of scales and a description of these variations is now made, in the order low frequency to high frequency variations, in both the space and time domains

Answer 4

The earth‘s surface is solid with exception of water (which has
rock below it). Under this core there is a layer of molted rock
and beneath that the is a mixture of rock and iron, and the
centre part is molted iron which is the generator of the greater
part of gravity. In space, any substance that has weight has
a gravitational force. This explains the reason that satellites
are launched close to the equator and in the direction of the
rotation, allowing centrifugal force to equal gravitational force.
Now NASA are about to launch a polar orbiting satellite which
will go into an elliptical orbit, closer at equatorial regions and
further when over polar regions, and should have a lateral
displacement owing to earth‘s spin influencing lateral movement.
PS Earth‘s liquid core spins faster than the outer crust which
makes NASA‘S mathematicians work a little harder.

Answer 5

The earth's iron core deep within its centre generates the magnetic field.

Answer 6

the movement of the convectional currents within the earth's molten iron core generates the magnetic field.
God bless,
gabe

Answer 7

A spinning iron core creates the mag fields.