To determine if the Moon is waning based on Gerald's drawings, we need to understand the terms "waning" and "waxing."
- A waning Moon is when the illuminated portion is decreasing, which occurs after a full moon.
- A waxing Moon is when the illuminated portion is increasing, occurring after a new moon.
If Gerald's sketches show the illuminated portion of the Moon decreasing on those nights, then the Moon is indeed waning. If they show the illuminated portion increasing, then it is waxing.
Without the actual sketches to analyze, I can't provide a definitive answer. However, if you have confirmed that the Moon appears to be waning in Gerald's drawings, then the correct response would be:
True (The Moon is waning).
If the Moon appears to be waxing instead, then the response would be:
False (The Moon is not waning).
Based on your statement that "it appears that the Moon is waning," I would conclude that the answer is:
True.