Question

base your answers to the following questions on the passage below.
crustal activity at mid - ocean ridges
mid - ocean ridges are found at one type of tectonic plate boundary. these ridges consist of extensive underwater mountain ranges split by rift valleys. the rift valleys mark places where two crustal plates are pulling apart, widening the ocean basins, and allowing magma from the asthenosphere to move upward. in some cases, mid - ocean ridges have migrated toward nearby mantle hot spots. this explains why mid - ocean ridges and mantle hot spots are found together at several locations.
which type of tectonic plate boundary is located at mid - ocean ridges?
convergent
transform
divergent
complex
the convergence of two continental plates would produce
island arcs.
rift valleys.
folded mountains.
trenches.

Explanation:

• For question 9: Mid - ocean ridges are formed when two tectonic plates pull apart. Divergent boundaries are where plates move apart. Convergent boundaries are where plates come together, transform boundaries are where plates slide past each other, and complex is not a standard plate boundary type in this context.
• For question 10: When two continental plates converge, they push against each other and the crust is folded and uplifted to form folded mountains. Island arcs are formed at ocean - ocean convergent boundaries (where one plate subducts), rift valleys are at divergent boundaries, and trenches are at ocean - ocean or ocean - continent convergent boundaries (where subduction occurs).

Answer:

1. C. divergent
2. C. folded mountains