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Two Views: Moon Phases and Eclipses
Created by Argraide
Updated October 16th, 2026
At a glance
- Play mode
- 📺 Presenter
- Format
- 🧊 3D
- Length
- ⏱ About 20 minutes
- Subject
- Science
- Grade
- 7
- Curriculum
- Alberta
- Curriculum code
- 7SS1
About this activity
A projector simulation with two windows on one Sun-Earth-Moon system: from space above the orbit and from the ground in Alberta. The class predicts one view from the other, then lines up eclipses and finds out why they are rare.
What students learn
- Represent lunar phases (new moon, first quarter moon, full moon, last quarter moon and the crescent and gibbous shapes between) from the positions of the Sun, Earth and Moon
- Explain that a phase is how much of the Moon's sunlit half faces Earth, not Earth's shadow
- Explain solar and lunar eclipses from the positions of Earth, the Moon and the Sun
- Explain why eclipses do not happen every month (the Moon's orbit is tilted about 5 degrees)
- Discuss tides in relation to the gravity of the Moon and the Sun
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