Question

question 10(multiple choice worth 3 points)
(03.04 mc)
the events taking place in two different locations are described below:
location a: movement of plates causes hot spots to move to a location with thinner crust
location b: tectonic plates move away from each other under the sea
in which location will active volcanoes most likely be formed and why?
location a, because the magma breaks through the thin crust
location a, because cracks between plates are filled with molten rocks which solidify
location b, because the oceanic plate and continental plate are pushed up through the crust
location b, because the thinner oceanic plate will be pushed under the continental plate

Explanation:

• For Location A: When hot - spots move to a location with thinner crust, magma can more easily break through the crust to form volcanoes.
• For Location B: Tectonic plates moving away from each other under the sea (a divergent boundary) can form mid - ocean ridges. But the description in the options for Location B is incorrect. Option C mentions oceanic and continental plates (which are not the case for a simple mid - ocean ridge where two oceanic plates are moving apart). Option D is about subduction (convergent boundary, not divergent).

Answer:

Location A, because the magma breaks through the thin crust