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When seafloor spreading happens, a rift forms at the bottom of a ocean and here new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge
When tectonic plates separate, geological activity such as seafloor spreading occurs.
What is seafloor spreading?
Seafloor spread is a phenomenon that happens along mid-ocean ridges when the new oceanic crust is generated by volcanic activity and then progressively travels away from the ridge.
The geological activity of seafloor spreading occurs when tectonic plates split apart.
When seafloor spreading occurs, a rift arises at the ocean's bottom, where new oceanic crust is generated by volcanic activity before moving away from the ridge.
Hence, tectonic plate separation is responsible for seafloor spreading.
To learn more about the seafloor spreading, refer to the link;
https://brainly.com/question/15122129
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