Over 90 percent of volcanism is associated with the edges of tectonic plates,and most of the rest is caused by hot spots.

Question

Quizplus · Accepted Answer

This is a generally accepted fact in the field of geology. Volcanoes typically occur at plate boundaries where magma can escape from beneath the Earth's crust, and hot spots are isolated areas where magma is able to reach the surface due to a particularly weak section of the Earth's crust.

Over 90 Percent of Volcanism Is Associated with the Edges