Question

(7) What are plate consuming (subduction) boundaries?
Ans.
(8) What are plate creating (constructive) boundaries?
Ans.​

Answer 1

Answer:

7. The second important tectonic setting where many volcanoes occur is along or near converging plate boundaries. At most such boundaries, where two plates collide, the heavier of the two - usually an oceanic one - sinks (or is pulled) under the other plate, a process called subduction.

8. Constructive plate boundaries or margins are regions where new oceanic crust is being generated. However, in order for the magma to ascend to the surface and build new lithosphere, the earlier formed crust must be pulled apart and fractured to create a new magma pathway.

Explanation:

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Answer 2

Answer:

Answer 1. The second important tectonic setting where many volcanoes occur is along or near converging plate boundaries. At most such boundaries, where two plates collide, the heavier of the two - usually an oceanic one - sinks (or is pulled) under the other plate, a process called subduction.

Answer 2. Constructive plate boundaries or margins are regions where new oceanic crust is being generated. However, in order for the magma to ascend to the surface and build new lithosphere, the earlier formed crust must be pulled apart and fractured to create a new magma pathway.