How much of Earth's magnetic field can be described by a simple dipole?

Question

Quizplus · Accepted Answer

The Earth's magnetic field is generated by the movement of molten iron in the Earth's core. This movement creates a magnetic field that is similar to the field of a simple dipole, with a north pole and a south pole. However, the Earth's magnetic field is not a perfect dipole, and there are some regions where the field is stronger or weaker than expected. These regions are called magnetic anomalies.

How Much of Earth's Magnetic Field Can Be Described by a Simple