an earthquake
forms when two {crustal} lithosphere plates move apart.
Long crack that forms as two tectonic plates move apart
Usually along rift valleys I believe.
when tectonic plates move toward each othe forms
When two plates move apart it forms a hole but new crust is formed.
an earthquake
Molten magma from the mantle rises at the top oceanic ridge, cools and solidifies, continually forming a crustal plate. Hundreds to thousands of miles from the ridge the plate moves downward into the mantle at the contact with another plate and melts. The continuous process resembling a large "conveyor belt" moves the crustal plate a few centimeters each year.
When two lithosphere plates move apart a divergent boundary is formed. Hope this helps you. :D
At divergent boundaries, two plates move apart from each other and the space that this creates is filled with new crustal material sourced from molten magma that forms below.
a fault
Oceanic trenches are the gaps which form when the tectonic plates move apart. They are the very deepest parts of the ocean.
beacause it is moving