Using Clay Models to Understand Volcanic Mudflows

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Gravity is a subtle but ubiquitous force that influences nearly all geologic processes from the formation of ores to the flow of glaciers and rivers. Gravity also determines the path some materials take as they flow down volcanoes. Lava flows, mudflows (also called lahars), and pyroclastic flows are three such materials. Understanding the factors that influence their path is critical to protecting lives and property. In this lesson, we focus on mudflows and demonstrate simple ways for students to predict their paths using 3-D clay models. Students are then asked to transfer their new knowledge to a real volcano.

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Type Journal ArticlePub Date 3/1/2007Stock # ss07_030_07_22Volume 030Issue 07

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Dorian Janney (Gaithersburg, MD)

Using Clay Models to Understand Volcanic Mudflows

This is a very interesting article that includes background information on stratovolcanoes and the associated mudflows, known as "lahars" when it involves hot ash falling onto glaciers. This... See More

Susan German (Hallsville, MO)

Not a bad article

I like how students learn about lahars. The introductory activity has students provide what they think about volcanic eruptions. I also like the use of models for students to learn.