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Air current close to a radiator. Diffusion of heat takes place in rigid solids but that is called heat conduction convection additionally may take place in soft solids or mixtures where solid particles can move past each other. 2 Convection Currents The Changing Earth The process happens as the…

The earth is made out of a number of different layers and though we live on the crust of the earth there are miles of earth beneath our feet. It is thought that heating of the mantle by the core creates convection cells in which hot mantle material rises cooling as it goes toward the crust until i…