Why Do Eclipses Happen? (Yardstick Eclipse Demonstration) View larger

Why Do Eclipses Happen? (Yardstick Eclipse Demonstration)

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Using simple materials, participants explore the vast distance between the Earth and Moon and model how solar and lunar eclipses happen.

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Using simple materials, participants explore the vast distance between the Earth and Moon and model how solar and lunar eclipses happen.

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Collection Be sure to practice this activity before your program -- it is a bit tricky to get the "Moon" and "Earth" balls to line up correctly the first time. If you do not have time to cover the full activity, this set of materials also provides a great demonstration of just how far apart the Moon and Earth are from each other. If it is too cloudy to use sunlight as the light source, use a very bright light, like an LED flashlight, instead.
Related Links 2017 Solar Eclipse Guide
Originating Source Night Sky Network
Related Books
[Suggest a book]
When the Sun Goes Dark, by Andrew Fraknoi and Dennis Schatz
Sun Moon Earth: The History of Solar Eclipses from Omens of Doom to Einstein and Exoplanets, by Tyler Nordgren

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Why Do Eclipses Happen? (Yardstick Eclipse Demonstration)

Why Do Eclipses Happen? (Yardstick Eclipse Demonstration)

Using simple materials, participants explore the vast distance between the Earth and Moon and model how solar and lunar eclipses happen.