The Origin of the Martian Magnetic Field Appears to Be

question 578

Multiple Choice

The origin of the Martian magnetic field appears to be:

• A) magnetic material deposited by impacts of iron meteorites.
• B) an electric dynamo still operating in the small Martian core.
• C) convection of molten, iron-rich lava in the Martian mantle.
• D) remanent magnetism from an earlier global magnetic field when Mars was young.

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