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Rotation, Revolution
| Term | Definition |
|---|---|
| equinox | Time when the sun is directly above the equator |
| solstice | Time when the sun is farthest north or south of the equator |
| rotation | The spin of a body on its axis |
| revolution | One complete trip along an orbit |
| axis | Imaginary line connecting the north and south poles |
| orbit | The path that a body follows around another body in space |
| day and night | Caused by Earth's rotation on its axis |
| axial tilt | The main reason that the Earth has seasons |
| seasons | Caused the tilt of Earth's axis as it revolves around the sun |
| winter | Season when Earth's axis is tilted away from the sun. |