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Seasons
Why do we have seasons
Term | Definition |
---|---|
rotation | the spin of an object around its axis |
rotation axis | the line on which an object rotation |
orbit | the path an object follows as it Moves around another object |
revolution | the orbit of one object around another object |
solstice | when Earth rotation axis is tilted directly toward 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 a planet that can be |
waxing Phase | Phase of the moon during which more of the moon near side is lit each night |
waning Phase | Phase of the moon during which less of the moon near side is lit each night. |
umbra | the central darker |