Cyclic Patterns

Cyclic Patterns

Author: David Brown

Part 1: Lunar Phases

Why does the moon's appearance change during the month?

See More
Try a College Course Free

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to over 2,000 colleges and universities.*

Begin Free Trial
No credit card required

28 Sophia partners guarantee credit transfer.

264 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 25 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.


See the moon phases as they change.

Source: NASA

The Universe: The Phases of the Moon | History

The phases of the moon have been used to track time since the dawn of mankind.

Names of the moon Phases.