the lithosphere is the solid outer section of earth that includes the entire earth's crust (continental and oceanic) and the rigid upper mantle
the lithosphere is not a continuous layer. it is divided into plates that move in relation to one another . the large scale movement of the earth's plates is called plate tectonic theory. and the divided lithosphere rests upon the lower soft layer called asthenosphere
it is believed that in the beginning, all continents are locked up into a huge landmass called pangaea, as proposed by alfred wegener in his continental drift theory. every year, plates move side ways 12 cm
there are 15 major plates, 50 plates in the world, and the plate where philippines rests on is called philippne sea plate