Sea-Floor Spreading. How is Earth magnetic?. The Earth is a layered planet consisting of crust, mantle, and core The outer core is a metallic liquid that moves around, creating a magnetic field The lithosphere moves around on top of this. What is magnetic reversal?.
“The sea is everything. It covers seven-tenths of the terrestrial globe. Its breath is pure and life-giving. It is an immense desert place where man is never lonely, for he senses the weaving of Creation on every hand. “
20,000 Leagues Under the Sea