GEOLOGY

Detailed explanation-1: -Convergent boundaries are often subduction zones, where the heavier plate slips under the lighter plate, creating a deep trench. This subduction changes the dense mantle material into buoyant magma, which rises through the crust to Earth’s surface.

Detailed explanation-2: -This process, called “subduction, ” involves an older, denser tectonic plate being forced deep into the planet underneath a younger, less-dense tectonic plate. When this process occurs in the ocean, an trench">ocean trench can form.

Detailed explanation-3: -If two tectonic plates collide, they form a convergent plate boundary. Usually, one of the converging plates will move beneath the other, a process known as subduction. Deep trenches are features often formed where tectonic plates are being subducted and earthquakes are common at subduction zones as well.

Detailed explanation-4: -These plates collide, slide past, and move apart from each other. Where they collide and one plate is thrust beneath another (a subduction zone), the most powerful earthquakes, tsunamis, volcanic eruptions, and landslides occur.

Detailed explanation-5: -Deep below the Earth’s surface, subduction causes partial melting of both the ocean crust and mantle as they slide past one another. This melting generates magma that makes its way to the surface, producing volcanoes, such as Mt. St. Helens.