Lithospheric plates are outlined by faults.
frequent volcanic activity
Yes
Mid-ocean ridges and deep sea trenches (with their associated volcanos). Also in limited areas strike-slip fault systems (e.g. California), continental collision zones (e.g. India & Asia), etc.
Fault lines
Earthquakes!
The lines of earthquake epicenters most effectively outline the edges of the lithosphere plates. The epicenter refers to the point on the earth's surface above the focus of an earthquake.
frequent volcanic activity
Yes
Mid-ocean ridges and deep sea trenches (with their associated volcanos). Also in limited areas strike-slip fault systems (e.g. California), continental collision zones (e.g. India & Asia), etc.
Earthquakes are mostly found at the edges of plates because that is the area of which the plates collide in different ways resulting in earthquakes and volcanoes.
de pleit boundaris
Yes
plate boundary
what is it
I'm afraid I only know the cause. When the edges of the tectonic plates rub together it causes vibrations, that is the earthquake.
Edges of tectonic plates
Fault lines