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| Day of the year that marks the beginning of fall in the Northern Hemisphere. (September 23rd) |
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| Imaginary line that passes through Earth's center at the North and South Pole |
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| The two days of the year when neither the northern or southern hemisphere is tilted toward or away from the sun |
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| The force between two objects; it's magnitude depends on their masses and the distance between them |
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| Distance north or south from the equator. Is measured in degrees |
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| The blocking of sunlight to the moon which happens when Earth is directly between the Sun and Moon |
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| The tide with the lest difference in high and low tide. Happens when the sun and moon are at right angles to each other |
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| Path an object takes as it revolves around another object in space. |
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| one of the different shapes of the moon as we see it on Earth |
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| Part of the eclipse (covering) shadow surrounding the darkest part of the shadow |
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| Movement of an object around another object. Ex: Earth revolves around the Sun |
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| The spinning of a planet on its axis. Happens day and night |
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| The blocking of sunlight to Earth and happens when the moon is between the Sun and Earth. (This rarely happens) |
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| The two times a year when the sun is at its greatest distance from the celestial equator: about June 21,or about December 22 |
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| The tide with the greatest distance between high and low tide and happens when the Sun and Moon are aligned in a straight line with Earth |
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| The darkest part of shadow during a solar eclipse. |
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| The day of the year that marks the beginning of Spring (March 21st) |
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