Why does the shape of the Moon seem to change?
An illustration showing how sunlight shines onto the moon so that the moonlight can be seen from Earth

The information in this video was accurate as of the original publication date.

Audience: Educators and Students
Grades: 3-5


Learn how the phases of the moon depend upon the positions of the moon, sun and Earth.

Why does the shape of the Moon seem to change?
Duration: 1 minute
> View QuickTime  [6.12 MB]