The Generation of Earth's Magnetic Field, While Not Completely Understood

question 296

Multiple Choice

The generation of Earth's magnetic field, while not completely understood, is MOST likely 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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