Fast-moving spreading ridges tend to be more gently sloped that slow-moving ridges.

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This statement is true. Fast-moving spreading ridges have a greater distance between their axis of spreading, which results in less magma being extruded per unit length. As a result, the ridge tends to have a more gentle slope. Slow-moving ridges, on the other hand, have a shorter distance between their axis of spreading, which results in more magma being extruded per unit length. Consequently, slow-moving ridges tend to be steeper.

Fast-Moving Spreading Ridges Tend to Be More Gently Sloped That