Answer:
True. The Japanese and Aleutian Island arcs are both examples of volcanic island arcs that are formed by long chains of volcanoes. These island arcs are created when oceanic lithosphere is subducted beneath continental or other oceanic lithospheric plates, leading to the formation of a volcanic arc on the overriding plate. The volcanoes in these island arcs are typically stratovolcanoes or composite volcanoes, which are characterized by steep slopes and explosive eruptions.