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Seasons
Why we have seasons
| Term | Definition |
|---|---|
| Rotation | The Spin around an axis |
| Rotation axis | The line on which an object rotates |
| Orbit | The path an object follows as it moves around another object |
| Revolution | The orbit of one object around another object |
| Solstice | When earth’s rotation axis is tilted directly towards or away from the sun |
| Equinox | When earth’s rotation axis is tilted Neither toward nor away from the sun |
| Phase | the lit part of the moon or planet that can be seen from earth |
| Waxing phase | |
| Waning phase | |
| Umbra | |
| Penumbra | |
| Solar eclipse |