| A | B |
|---|
| gas | is water in the form of water vapor |
| Convection | heat rising; cool air/liquid sinking |
| Earth's layers | crust, mantle, outer core, inner core |
| lithosphere | contains Earth's plates |
| radiation | transfer of energy through empty space; waves or rays |
| degrees | used to locate positions on Earth's surface |
| elevation | height above sea level; major difference between coastal and interior plains |
| gentle slope | contour lines are far apart |
| relief | difference in highest and lowest points of an area |
| steep slope | contour lines are close together |
| scale | feature of map that relates distance on Earth's surface |
