The word lithosphere derives from the Greek "litho" means "stone" and "σφαίρα" means "sphere", in the dictionary of the royal academy they define it as "rock cover that forms the solid outer capsule of the terrestrial globe", the lithosphere It is the solid surface layer of the earth, because it is a planet in the solar system that rotates around its star and the sun in the third innermost curve and is determined by its hardness.
The lithosphere is made up of the earth's crust that is comparatively thin, with a thickness that varies from 5 kilometers, at the ocean base, up to 70 kilometers in the mountainous areas of the continents and in the outermost areas of the mantle that floats above the atmosphere. which is located in the upper area of the earth's mantle that is located below the lithosphere at about 250 and 660 kilometers deep. It also has a thickness of 50 to 300 kilometers, with an external limit of the earth's surface, that limit changes according to the determination of the lithosphere that it occupies.
The lithosphere is fragmented to a series of technical plates that is a piece of the lithosphere that moves as a hard block without internal deformity occurring on the asthenosphere is the outer and upper mantle of the earth or the lithosphere that is the one that is divided by plates that move between 2 to 20 centimeters per year and are stimulated by convection currents that take place in the asthenosphere.
