Why Is It Surprising That Mercury's Magnetic Field Is Strong

question 14

Multiple Choice

Why is it surprising that Mercury's magnetic field is strong enough to be measured (> >Earth's moon's) ,yet significantly weaker than Earth's magnetic field?

• A) Mercury's density suggests its core is like Earth's,so its magnetic field should be of nearly equal strength.
• B) Mercury is hot enough that its core should be very molten and produce a magnetic field larger than Earth's.
• C) Mercury's small size suggests that it should no longer have a molten core,so no magnetic field is expected.
• D) Mercury rotates so slowly that it should not be able to produce a magnetic field.
• E) Mercury is so close to the sun that its magnetic field should be destroyed by the solar wind.

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Forms of communication, such as television, newspapers, and the internet, that reach large audiences.

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Essential requirements for an individual or society to maintain a minimum standard of living, including food, shelter, clothing, and healthcare.

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The requirements necessary for the governance and wellbeing of a society, including stability, participation, and the enforcement of legal norms.