Websites are current as of July 3, 2017


This WebQuest addresses the following Utah State Core standards:

Standard 6.1.1: Structure and Motion Within the Solar System

Develop and use a model of the Sun-Earth-Moon system to describe the cyclic patterns of lunar phases, eclipses of the Sun and Moon, and seasons. Examples of models could be physical, graphical, or conceptual.


The Moon changes shape every day. Sometimes you can see only part of the Moon. Other times, you can see the entire Moon. Why does this happen?

The purpose of this WebQuest is to help you learn why we see phases of the Moon.


Your task is to explain why the Moon changes appearance throughout the month. You will complete four tasks. If you don't have a worksheet, click here to get one. It will help you understand why the Moon's appearance changes.

Moon PhasesTask, the First

Complete the Task One on your worksheet. Draw and name eight important phases of the Moon. You will...

  • Draw the eight Moon phases.
  • Write the correct name of these phases.


Watch these videos to help you.

Here are some websites you can use to complete Task One.

How Do the Phases Get Their Names?

Phases of the Moon

Phases of the Moon II

Task, the Second

Science has special terms. You need to know what these terms mean. For Task Two, define the following terms: gibbous, waning, and waxing. You will identify which phases are waxing and waning.


Get the definitions of the terms at this webpage.

Glossary of Lunar Terms

Task, the Third

For Task Three, draw your birthday Moon. What phase was it on the day you were born? Find out and fill in the circle. Also, draw a picture of the phase of the Moon on your 2013 birthday


Use this website. Select your birthdate.

StarDate Online – Phases of the Moon Calendar

Task, the Fourth

How does the Moon change during the month? For Task Four, complete the Task Four worksheet. See how the Moon changes each day. Complete the worksheet for one month..


Go the website below.  Select the current month and year.

StarDate Online – Phases of the Moon Calendar

Task, the Last

Why does the Moon change appearance each day? For Task Five, complete the Task Five worksheet. See why the Moon changes appearance each day.

How Moon Phases Work


Congratulations!  You are now a phases of the Moon monster! Repeat after me, "I am so good, I can hardly stand myself!"