Question

d. How subduction cause the formation of land mass like mountains and
volcano?​

Answer 1

Answer and Explanation:

The process where one tectonic plate slides beneath another and blends into the Earth’s mantle is called subduction.  

As two plates grind against one another, it results in the consequence of an earthquake in the subduction zone. Usually, due to an open trench between the plates, magma spills out during the process. When the tectonic plate continues to sink, the heat from beneath the Earth shall result in its melting state. Therefore, it shall mix along with the magma underneath the surface.

Moreover, a volcano occurs when the continental and ocean crust collide. These two crusts shall undergo the phase of two plates grinding together. The oceanic crust shall melt as it settles to the mantle and therefore emits the magma to the surface, resulting in a volcano. Meanwhile, other landforms such as mountains emerge when plates fold during the occurrence of earthquakes and volcano eruptions.

Answer 2

Subduction cause the formation of land mass like mountains and

volcano with the help of collision between the oceanic crust and the continental crust.

• Due to the collision between the oceanic crust and the continental crust, the formation of a subduction volcano occurs.
• A volcano is formed by the melting of the oceanic crust and then it drift upwards until it breaks out on the surface.
• The subduction zone (a zone where the collision occur between the continental and oceanic crust) helps in the formation of a subduction volcano.
• The continental crust is more thicker and buoyant as compared to the oceanic crust due to which the oceanic crust sinks.
• The oceanic crust travels 50-100 miles when it sinks and the fluid which is trapped inside is released by the oceanic crust.

Hence, the collision between the oceanic crust and the continental crust is responsible for the formation of mountains and volcanoes by the subduction.