............ describes the wobbling of Earth's axis of rotation over long periods of time. It takes roughly ........ years (don't include commas) to complete one full cycle. This means that the star Polaris will not always directly align with the North Celestial Pole.
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............ describes the wobbling of Earth's axis of rotation over long periods of time. It takes roughly ........ years (don't include commas) to complete one full cycle. This means that the star Polaris will not always directly align with the North Celestial Pole.
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- Tonight you see a waning crescent in the night sky. A few (n) days later, the night is once again clear and you see a waning crescent. How many degrees did the Moon advance in its orbit during this time frame?A rotation rate, or frequency, of 500 nHz corresponds to a rotation period of 23 days—it takes 23 days for material to follow one complete circle around the Sun. Furthermore, the frequency and period are inversely proportional to one another: if one is doubled, the other is halved. Given these facts, what is the approximate rotation period (in days) for equatorial material at the Sun's surface? (Use your answer to the previous question as the rotation rate.)14. Why does Earth not see a lunar eclipse once a month?A. Wait . . . there is a lunar eclipse every month.B. the plane of the Moon’s orbit is tilted to the plane of Earth’s orbitC. the Sun, Earth, and Moon do not line up in this order once a monthD. Because I said so.
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