Convection taken the form of the movement of deep, hot mantle towards the surface, cooling at the surface by conduction, radiation and volcanic action and return of cool mantle to depth just as in atmospheric circulation or in a beaker of water heating on a hot plate.
(Convection; taken; the form of the movement of deep, hot mantle towards the surface)
Convection
taken
the form of the movement of deep, hot mantle towards the surface