All of the following conditions except one appear to be necessary in order for a planet or satellite to produce a planet-wide magnetic field by the dynamo effect. Which is the exception?
A)an interior that is at least partially liquid
B)an interior containing material that can conduct an electric current
C)relatively rapid rotation around its axis
D)a rotation axis that tilts only slightly with respect to the ecliptic

Question

Quizplus · Accepted Answer

A planet or satellite can still produce a planet-wide magnetic field by the dynamo effect even if its rotation axis tilts significantly with respect to the ecliptic. Examples include Earth and Uranus, both of which have tilts of over 23 degrees.

All of the Following Conditions Except One Appear to Be