Which force is responsible for seafloor spreading?
A. The effect of tides
B. Convection in the crust
C. Convection in the mantle
D. Gravity in the mantle
Answer (2)
The force responsible for seafloor spreading is . . . convection in the mantle
The hot molten mantle moves towards these plate boundaries, and comes up, pushing the crust outwards - creating the "seafloor spreading"
The correct answer is convection in the mantle , which is the force responsible for seafloor spreading. This process is driven by the rising and falling of molten rock in the mantle, leading to the formation of new crust at mid-ocean ridges. Ultimately, as tectonic plates shift, the ocean floor expands over time.
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