Question

As subduction occurs, the oceanic crust moves from the _____ toward a ____.
the answer options for both sides are
Mid-ocean ridge
Seafloor spreading
Deep-ocean trench

Answer 1

Answer: Mid Oceanic Ridge (MOR) to Deep-Oceanic trench

Explanation: As the plate tectonic theory is a continuous process, so at some places, divergent plate movement takes place whereas at other places, convergent plate movement takes place. So from that context we can conclude that

• initially two plates moves apart from each other,
• and this plates then collides with the other nearby plates, thereby the heavier one gets subducted beneath the other, forming a deep sea trench.