Your science class is studying the phases of the moon your teacher has asked you to observe as many phases as you can over the course of one month you’re making a table keeping track of the days in which you are able to observe each of the eighth main moon phases the moon phases cycle last 29.5 days if you assume that the new moon begins on day one predict how many days we have a lapse when you can see the waxing gibbous phase the bubble in your answer on your answer rounded to the nearest whole number