Science Project Summary:

Demonstrate how volcano's erupt using an air-pressure model

Advanced 7
Difficulty: Advanced 7
Required Skills: None
Safety concerns: None
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Abstract:
You may wish to do this demonstration outside. This apparatus will use air pressure to propel tephra (sand) into the air. A fan disperses the tephra downwind where it accumulates to form a cinder cone. Visibility of the tephra is enhanced if a white sheet or cardboard is used as a backdrop and drop cloth.