Hess's original hypothesis was that sea-floor spreading is driven by deep mantle ____.
A) contraction
B) spreading centers
C) convergent boundaries
D) transform faults
E) convection

Question

Quizplus · Accepted Answer

Hess proposed that sea-floor spreading is driven by convection currents in the mantle carrying heat and moving material towards the surface, causing the sea floor to move apart at mid-ocean ridges.

Hess's Original Hypothesis Was That Sea-Floor Spreading Is Driven by Deep