Observe the position and phase of the moon on several days in succession and at regularly chosen times during the day and evening. (It is probably best to choose a point near the first quarter of the moon’s cycle when the moon is visible in the afternoon and evening.)
a. Sketch the shape of the moon on each successive day. Does this shape change for different times in the same day?
b. Can you devise a method for accurately noting changes in the position of the moon at a set time, say, 10 P.M., on successive days? A fixed sighting point, a meter stick, and a protractor may be useful. Describe your technique.
c. By how much does the position of the moon change from one day to the next at your regular chosen time?