Question

1. what forms when an oceanic and continental plate converge?

island arcs
rift valleys
volcanic mountains
folded mountains

Explanation:

When an oceanic plate (denser) converges with a continental plate (less dense), the oceanic plate subducts (dives beneath) the continental plate. As the subducting oceanic plate melts due to high temperatures and pressures in the mantle, magma forms. This magma rises and erupts at the surface, leading to the formation of volcanic mountains on the continental side. Island arcs form when two oceanic plates converge. Rift valleys form at divergent boundaries (where plates move apart). Folded mountains form mainly due to collision of two continental plates or intense compressional forces in continental - continental or continental - oceanic settings in a different way (not through subduction - related volcanism as in this case).

Answer:

Volcanic mountains