Question

What are constructive and destructive plate boundaries?

Answer 1

Hint: A constructive plate boundary happens when the two plates move apart from each other. They are mostly located undersea. The movements in the plates can cause earthquakes. Destructive plates generally include an oceanic plate and a continental plate. These plates move towards each other.

Complete answer:
The Constructive plate boundaries move apart from each other with the same density, and magma comes up and fills in the gap. It constructs new land in the shape of a shield volcano. Then, the crust is formed. And the same thing that happens under the sea is called seafloor spreading. These boundaries are mainly situated under the sea. Volcanoes may become so huge that they erupt out of the sea and create a volcanic island.

Destructive plate boundaries and plates move towards each other. It happens when one plate is denser than the other plate. Because of the movement, friction is created which melts the oceanic plates and it can lead to earthquakes or volcanic eruptions. When two continental plates collide, either of them cannot drop. So the land buckles up and forms folded mountains. This is known as collision margins. Earthquakes may happen at collision margins.

Note: There are mainly three kinds of boundaries. Those are destructive (convergent), constructive (divergent) and conservative. The direction of each plate movement commands the characteristics and activity associated with it. The Mid-Atlantic Ridge is an example of two pairs of tectonic plates moving apart from each other. It is possible that there are three types of destructive plate boundary.