The Generation of Earth's Magnetic Field,while Not Completely Understood,is Most

question 241

Multiple Choice

The generation of Earth's magnetic field,while not completely understood,is most probably influenced by:

• A) the flow of electrons and ions constituting an electric current in Earth's magnetosphere.
• B) electric currents in Earth's electricity-conducting molten core.
• C) permanent magnetism in Earth's crustal rocks and the iron core.
• D) electric currents in Earth's semisolid mantle induced by the motion of the solar wind flowing around Earth.

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