Phases of moon explained using an orrery

As the moon rotates around the earth it travels through phases. The alignment of the sun, earth, and moon create the phases. I use an orrery to explain the moon s alignment during, new moon, waxing crescent, ist quarter, waxing gibbous, full moon, waning gibbous, last quarter, waning crescent, and back to new moon. The sidereal period is 27. 3 and the moon is measured against stars. The synodic period is 29. 5 days and the moon is measured against the sun. You may also enjoy Rotation and Revolution of the Earth with an Orrery