Question

Which statements regarding tectonic motion are correct?

Answer 1

Answer: Option (B), (D) and (E)

Explanation:

1. When an oceanic plate and a continental plate collide, the denser oceanic plate gets subducted below the continental plate.
2. Tsunamis are generated due to the sudden release of energy within the water bodies such as seas and oceans. This could be due to earthquake, intensive volcanisms of which earthquake is the most common one.
3. Sea floor spreading takes place due to the divergent plate movement.
4. When volcanic eruption takes place, it generates pyroclastic materials such as lapillis, block and lava.
5. Hotspots are the regions where mantle plumes occurs, in which the hot magma rises up towards the surface. This could result in a single or chain of volcanoes.

Answer 2

The correct answers are B, D, and E.

Actually, on the contrary, to choice A, oceanic plates plunge beneath continental plates during a collision because they are heavier

On the contrary, to choice C, Seafloor spreading occurs at divergent boundaries.