Which statement about the formation of the magnetic field of Earth is true?
A) Its formation is a result of magnetic materials in the core.
B) Its formation is a result of the movement of magnetic materials in the core.
C) It constantly forms, is lost, and is regenerated.
D) It is more strongly observable at relatively low temperatures.
Question 2
Which factor is not included in Glatzmaier and Roberts' model?
A) Earth's rotation
B) compositional convection
C) convective motion
D) electricity and magnetism