Flexi Says: A full moon occurs when the whole side facing Earth is lit. This happens when Earth is between the Moon and the Sun. About one week later, the Moon enters the quarter-moon phase. Only half of the Moon’s lit surface is visible from Earth, so it appears as a half circle. Another week later, the Moon moves between Earth and the Sun. The side of the Moon facing Earth is completely dark. This is called a new moon. One week after that, the Moon is in another quarter-moon phase. Finally, in one more week, the Moon is back to full.
