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6 Cards in this Set
- Front
- Back
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the axis
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a straight line about which the earth rotates
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the equinox
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one of the two days a year(in spring and in autumn) when day and night are exactly the same length all over the world
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the gravity
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the attraction of the mass of the earth, the sun, and the moon
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the solstice
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either of two times a year(in June and in December) when the earth is the farthest from the sun; the longest and the shortest nights of the year
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the Stonehenge
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collection of monolithes in England built by prehistoric people
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the tides
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the alternate rising and falling of the surface of the ocean , caused by the gravitational pull of the moon and the sun
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