| A | B |
| geologist | scientist who studies Earth |
| convection | transfer of heat energy by flowing matter |
| convection current | cycling of flowing matter as it is heated and cooled |
| crust | Earth's outermost layer |
| conduction | transfer of heat energy through direct contact |
| inner core | solid iron center of Earth's core |
| mantle | layer of Earth between the crust and outer core |
| outer core | liquid metal layer of Earth between the inner core and mantle |
| core | center part of the Earth |
| continent | large land mass |