GEOLOGY

Detailed explanation-1: -Oceanic-continental subduction occurs when an oceanic plate dives below a continental plate. These regions can have powerful earthquakes along the subduction zones, potentially generating tsunamis. This boundary has a trench and mantle wedge, but the volcanoes are expressed in a feature known as a volcanic arc.

Detailed explanation-2: -What happens when thin oceanic crust and thick continental crust push against each other? It will get wider. The Atlantic Ocean has a large mid-ocean ridge. New seafloor continuously forms at this ridge.

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: -Subduction occurs when there is a difference in the density of the plates. Oceanic crust is typically denser than continental crust and is forced downwards into the hot mantle when it collides with continental crust. The less dense conitinental crust is forced upward.

Detailed explanation-5: -When an ocean plate collides with another ocean plate or with a plate carrying continents, one plate will bend and slide under the other. This process is called subduction. A deep ocean trench forms at this subduction boundary.