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| The path taken by an object revolving around another |
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| A round three dimensional object |
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| An imaginary line around which the earth spins |
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| Causes day and night to occur |
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| The earth's year long elliptical orbit around the sun |
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| An elongated closed figure that describes the earths year round orbit around the sun |
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| The twice year point at which the sun reaches its greatest distance from the equator |
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| Twice yearly time when the sun is directly over the equator |
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| Portion of the interior of a planet or moon lying between the crust and core |
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| The change in apearance of the moon as viewed from Earth |
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| The moon phase that occurs when the moon is between the earth and the sun |
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| This describes phrases following a new moon as more of the moons lighted side becomes visible |
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| The phase that ocurs when all of the moon surface facing earth reflects light |
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| Describes phases that occur after a full moon as the visible lighted side of the moon grows |
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| occurs when the moon passes directly between the sun and earth and casts a shadow over part of the earth |
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| Occurs when the earth's shadow falls on the moon |
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