Divergent boundaries: A divergent boundary is two tectonic plates moving away from each other. The space it creates is filled with new crustal material sourced from molten magma. The great rift valley, and the Red sea.
Convergent boundaries: A convergent boundary is when two tectonic plates or fragments from the lithosphere toward one another and collide.
Transform boundaries: A transform boundary is a boundary that is creates by the action of two tectonic plates that are sliding past each other sideways. In this type of boundary, a boundary isn't created or destroyed.