people do stuff
When oceanic crust collides with continental crust, the denser oceanic crust is forced beneath the continental crust in a process called subduction. This happens because oceanic crust is heavier, colder, and more dense than continental crust, making it susceptible to being subducted under the lighter continental crust. This collision can result in the formation of mountain ranges, volcanic arcs, and deep ocean trenches.
When new crust is made, like at a spreading center, old crust must be destroyed, like at a subduction zone, where it is brought back into the inner earth and melted and recycled through.
Oceanic crust is more dense than continental crust. All that water weight compresses the heck out of the material in the plate and also the oceanic crust contains larger percentages of denser elements such as magnesium and iron than the continental crust which also contributes to it's higher density. This sets the conditions for what happens. The more dense oceanic crust will "dive under" continental crust because it is more dense, and all because of the difference in densities.
When continental plates collide, the denser oceanic crust is usually subducted beneath the less dense continental crust. This process can create subduction zones, where the oceanic crust is forced downward into the mantle. The oceanic crust may melt or be recycled back into the mantle in these subduction zones.
A mountain gets made
Erosion happens in the earths crust and it happens because of that layer is exposed to that weather
Trench
erosion
the oceanic crust slides down and burns in the mantle and forms a volcano
volcanoes
bad
The pressure would decrease as you moved from the core to the crust.
A sudden movement of the Earth's crust is called an earthquake.
The Earth's crust becomes weathered, and this can affect the landscape over time.
you get hotter and hotter
It creates a mountain
An Earthquake