Question

2 the map below shows the locations of four active volcanoes in the caribbean sea.
volcanoes in the caribbean
what do these volcanoes indicate about plate tectonics in the region?
a the volcanoes form an island arc, indicating a converging plate boundary.
b the volcanoes form a line, indicating a diverging plate boundary.
c two plates are moving past each other, causing faulting and magma formation.
d two plates are moving apart, creating new seafloor.

Explanation:

To solve this, we analyze plate tectonic boundaries:

• Option A: Island arcs form at converging (subduction) plate boundaries (e.g., oceanic - continental or oceanic - oceanic convergence). The Caribbean volcanoes form an island arc - like chain due to subduction (converging plates).
• Option B: Diverging boundaries (like mid - ocean ridges) create new crust and don't form island arcs; they have linear rifts, not volcanic island chains like this.
• Option C: Transform boundaries (plates moving past) cause earthquakes/faults, not island - arc volcanoes.
• Option D: Diverging boundaries (moving apart) create mid - ocean ridges/new seafloor, not island arcs with volcanoes from subduction.

So, the volcanoes forming an island arc indicate a converging plate boundary.

Answer:

A. The volcanoes form an island arc, indicating a converging plate boundary.