Earth's magnetic field

Earth's magnetic field

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Credit: GARY HINCKS/SCIENCE PHOTO LIBRARY

Caption: Earth's magnetic field. Cutaway artwork showing the generation of Earth's magnetic field. The magnetic field lines (grey) radiate from the south magnetic pole (bottom right of globe), and converge at the north magnetic pole (black dot, upper left of globe). These are near, but not at, the north and south geographic poles (black lines, top & bottom) about which the Earth rotates. The magnetic field is thought to be generated by the spiral movement of molten iron in the Earth's liquid outer core (yellow), which acts as an electromagnet. Dotted lines show the declination (angle, 14 degrees) between magnetic north and true north from New York, USA.

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Keywords: art, artwork, circle circles, declination, diagram, dip, earth, earth science, force, forces, geographic, geographical, geography, geological, geology, geomagnetic, globe, illustration, inclination, lines, magnetic field, magnetism, magnetosphere, north pole, physical, planet, polarity, poles, round shape, rounded circular, science, sciences, scientific, south, true, whole earth, world

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