| A | B |
| Rotation | The spinning of an object on an axis or around its own center |
| Revolution | The movement of one object around another object |
| Axis | An imaginary line that runs through the center of Earth |
| Orbit | The path that one object in space takes to travel around another object in space. |
| Tilt | Leaning to one side in relation to an object |
| Hemisphere | One of the halves of the earth as divided by the equator or by the earth's axis |
| Equator | An imaginary line drawn around the earth, equally distant from the north and south poles |
| Season | One of the 4 divisions of the year, marked by particular weather patterns and daylight hours |