what does the presence of new rock near an oceanic ridge indicate?\nthere is always a deep - sea trench…

what does the presence of new rock near an oceanic ridge indicate?\nthere is always a deep - sea trench underneath.\nthere is evidence of seafloor spreading.\nthey are made from oceanic crust.\nthey have iron oriented in different directions.

what does the presence of new rock near an oceanic ridge indicate?\nthere is always a deep - sea trench underneath.\nthere is evidence of seafloor spreading.\nthey are made from oceanic crust.\nthey have iron oriented in different directions.

Answer

Brief Explanations:

Oceanic ridges are sites of seafloor spreading. Magma rises up at these ridges and cools to form new ocean - floor rock. This is evidence for the theory of seafloor spreading. A deep - sea trench is associated with subduction zones, not always with oceanic ridges. While new rocks near oceanic ridges are part of the oceanic crust, this doesn't specifically explain the significance of their presence. The orientation of iron in rocks is related to Earth's magnetic field reversals but not the main indication of new rock near an oceanic ridge.

Answer:

There is evidence of seafloor spreading.