Development of a Lesson Program about Snowmelt-type Volcanic Mudflow

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  • 融雪型火山泥流に関する授業プログラムの開発と授業実践

Abstract

<p>In this study, we developed a class program on snowmelt-type volcanic mudflow and modeled the concept during a lesson unit and conducted a questionnaire survey on volcanoes at a junior high school near Mt. Ontake. Lava was modeled using melted sugar, and two topographic volcano models were created from papier-mâché: a winter model with a snow layer and a summer model without the snow layer. The model lava was then applied to both models and the phenomena that occurred with and without the snow were compared. The experiment confirmed that the mudflow generated by melting snow during winter (the snowmelt-type volcanic mudflow model) spreads more widely than-that without snow during summer (lava model). The models demonstrated that when a volcanic eruption occurs during the snowy season, a snowmelt-type volcanic mudflow is triggered. We developed a class program that enables students to realize that the damage spreads over a wider area than with lava alone.</p>

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