Question

According to the plate tectonics theory, sea-floor spreading occurs at a

O convergent boundary.
O divergent boundary.
subduction zone.
O transform boundary.

Answer 1

Sea-floor spreading occurs at a divergent boundary where two tectonic plates move away from each other.

Step-by-step explanation:

According to the plate tectonics theory, sea-floor spreading occurs at a divergent boundary. This is where two tectonic plates move away from each other, creating a gap. Magma rises up from the mantle to fill the gap, solidifies, and forms new oceanic crust.

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