What oceanic feature clearly proves that the seafloor spreads?Group of answer choicesvolcanoesmountain rangeabyssal plainrift valleytrench
Question
What oceanic feature clearly proves that the seafloor spreads?Group of answer choicesvolcanoesmountain rangeabyssal plainrift valleytrench
Solution
The oceanic feature that clearly proves that the seafloor spreads is the rift valley. This feature is found along the mid-ocean ridge system, which is a continuous range of volcanoes on the seafloor where new crust is produced. The rift valley, or the central valley of the mid-ocean ridge, is where seafloor spreading takes place. Here, magma rises from the mantle, cools, and forms new seafloor. As new crust is added, the seafloor spreads apart. This process is also known as plate tectonics.
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