Question

slip, slide, & collide
your score: 5
time:
plate interactions challenge
case 3: south america
what geological event is most likely to occur at this plate boundary in the future?
a chain of volcanic islands will form off the south american coast.
part of the south american continent will break off, forming a new sea.
new crust will be formed by magma oozing up between divergent plates.
eruptions will occur at volcanoes such as cotopaxi.
courtesy nasa goddard space flight center

Explanation:

The South American plate boundary (Andes region) is a convergent boundary where an oceanic plate subducts under the continental plate, leading to volcanic activity. Cotopaxi is a volcano in South America (Andes) formed by this subduction. A chain of volcanic islands is typical of ocean - ocean subduction (like the Aleutians), not continental - oceanic. Continental break - off and new sea formation are for divergent continental boundaries (like East African Rift), and new crust from divergent plates (magma oozing) is for mid - ocean ridges or continental rifts, not the South American west coast boundary. So eruptions at volcanoes like Cotopaxi are likely.

Answer:

D. Eruptions will occur at volcanoes such as Cotopaxi.