How does the plasticity of the earths mantle influence the movement of the lithospheric plate?

The mantle is composed of rocks that are extremely hot (past their boiling point) but have not turned into molten rocks due to extreme pressure. Therefore the rocks are rather plastic and move with convection currents in the regions. These convection currents are responsible for the tectonic plate movement of the crust above it.

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.