Moon Observational

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George Washington University *

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2184

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Mathematics

Date

Jan 9, 2024

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10

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Dates and Times: 9/28: 7:26pm 10/5: 6:41pm and 7:26pm
10/9: 8:43pm
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11/1: 6:35pm
11/6: 7:56pm
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11/7: 6:03pm
11/28: 8:35pm 1. Do the times you observed a given phase make sense based on the phase and location of the Moon in your sky? Explain. I compared my visuals with a lunar calendar of moon phases and found the following: For 9/28: The waxing crescent makes sense because the new moon was on 9/25. For 10/5: The waxing gibbous makes sense because the first quarter was on 10/2. For 10/9: This was a full moon. For 11/1: This was a first quarter moon. For 11/6: The waxing gibbous makes sense because this is two days before a full moon. For 11/7: Same as above. For 11/28: The waxing crescent makes sense given the first quarter moon two days later. Though I didn’t capture every phase of the lunar cycle, the timeline makes sense, and given how I repeated over a few months, the cyclical element is evident.
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2. How can the phase of the Moon be used to tell time? To answer this, make a table of what time each of the eight major lunar phases (see Figure 2) would rise, be highest in your sky, and set. For example, does it make sense to expect to see a full moon during the middle of the day? Why or why not? Phase Rise Highest Set New 6am 12pm 6pm Waxing Crescent 9am 3pm 9pm First Q 12pm 6pm 12am Waxing Gibbous 3pm 9pm 3am Full 6pm 12am 6am Waning Gibbous 9pm 3am 9am Third Q 12am 6am 12pm Waning Crescent 3am 9am 3pm It doesn’t make sense to see a full moon during the day because it sets at 6am and rises at 6pm, so it likely wouldn’t be visible at 12pm. 3. Why do you think keeping track of the phases of the Moon was so important to our Ancestors? I think it was a simple measure of time that could be consistently observed (without having a ton of scientific knowledge) and gave a basis of when a unit of time (a month) was passing. In counting typically three cycles, they could predict seasons and other weather patterns that might impact their day to day life. Additionally, the moon played a great role in several forms of religion, and there were ceremonies and non-secular repercussions of the moon being in a different phase.