Convection currents in the mantle and core make tectonic plates move. The continental crust of the Earth is thicker and lighter than the oceanic crust.
Tectonic plates
They are known as tectonic plates from the Greek word for carpenter.
The crust and the hard uppermost mantle make up the lithosphere, which is the solid, rocky layer covering the entire surface of the planet and reacts to stresses as a brittle solid. The lithosphere ranges in thickness from 50 - 200 kmA and is fragmented into tectonic plates with boundaries where plates collide, diverge, or grind past each other.A Wilson, M. (2000) Igneous Petrogenesis - A Global Tectonic Approach, Chapman and Hall, London.
Earth's lithosphere is broken up into 15 tectonic plates.
Magma is the molten rock below the crust, in the mantle. Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. These currents cause the movement of the tectonic plates that make up the earth's crust.
Volcanos are formed by tectonic plates pulling apart exposing the magma in the earth's mantle.
Tectonic plates
Tectonic plates
No(see the explanation of the question "Why do the tectonic plates move?"
They are known as tectonic plates from the Greek word for carpenter.
Subduction is the process of materials moving back into the earth at the boundary of tectonic plates.
there are 7 huge plates but dozens of smaller plates
pacific and atlantic plates
The crust and the hard uppermost mantle make up the lithosphere, which is the solid, rocky layer covering the entire surface of the planet and reacts to stresses as a brittle solid. The lithosphere ranges in thickness from 50 - 200 kmA and is fragmented into tectonic plates with boundaries where plates collide, diverge, or grind past each other.A Wilson, M. (2000) Igneous Petrogenesis - A Global Tectonic Approach, Chapman and Hall, London.
Earth's lithosphere is broken up into 15 tectonic plates.
Friction itself is a naturally occurring force but yes, tectonic plates do encounter friction.
Magma is the molten rock below the crust, in the mantle. Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. These currents cause the movement of the tectonic plates that make up the earth's crust.