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6 Cards in this Set

  • Front
  • Back
the axis
a straight line about which the earth rotates
the equinox
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
the gravity
the attraction of the mass of the earth, the sun, and the moon
the solstice
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
the Stonehenge
collection of monolithes in England built by prehistoric people
the tides
the alternate rising and falling of the surface of the ocean , caused by the gravitational pull of the moon and the sun