Final answer:
The movement of tectonic plates creates volcanoes through the process of subduction, when two plates collide or move apart. This can lead to the formation of volcanic arcs like the Andes Mountains.
Step-by-step explanation:
The movement of tectonic plates creates volcanoes through a process called subduction. When two plates collide or move apart, magma rises from the Earth's mantle and can reach the surface, forming a volcano. For example, in a subduction zone, where an oceanic plate goes under a continental plate, the oceanic plate melts and generates magma, leading to the formation of a volcanic arc like the Andes Mountains in South America.
Learn more about Tectonic plate movement and volcano formation