This current in turn produces a weak electromagnetic ... of the water making up the ocean — and possibly also about the magma beneath Earth's surface. Related: Why we're one step closer to ...

Currents of magma within our planet move the plates that form the continental crust in a constant process that builds mountains and creates valleys. These valleys may eventually become lakes ...

Eight major plates are named on the diagram below. Heat from the core makes magma in the mantle rise towards the crust. As the hot current nears the crust, it begins to cool and sink back towards ...