definition
convection:a movement of matter that is due to differences in density that is caused by temperature variations.
convection:a movement of matter that is due to differences in density that is caused by temperature variations.
definition:
oceanic crust:geologically young compared with the continental crust and consists of basaltic
oceanic crust:geologically young compared with the continental crust and consists of basaltic
continental crust
definition:the relatively thick part of the earth's crust that forms into landmasses.
definition:the relatively thick part of the earth's crust that forms into landmasses.