GEOLOGY

Detailed explanation-1: -About 80% of earthquakes occur where plates are pushed together, called convergent boundaries. Another form of convergent boundary is a collision where two continental plates meet head-on.

Detailed explanation-2: -Answer and Explanation: The type of plate boundary that is known to create the most powerful and deep earthquakes are the convergent plate boundaries. Additionally, these type of earthquakes occur due to plate collisions at the subduction zones.

Detailed explanation-3: -At convergent plate boundaries, where two continental plates collide earthquakes are deep and also very powerful. In general, the deepest and the most powerful earthquakes occur at plate collision (or subduction) zones at convergent plate boundaries.

Detailed explanation-4: -A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth’s mantle to the surface, solidifying to create new oceanic crust.

Detailed explanation-5: -Earthquakes in Japan are caused by ocean-ocean convergence. In this part of the Pacific Ocean, oceanic crust subducts beneath oceanic crust. This creates as many as 1, 500 earthquakes every year. In March 2011, the 9.0 magnitude Tōhoku earthquake struck off of northeastern Japan.