8th Grade Volcano Experiment
8th grade students in Mrs. Jones' science class participated in two volcano experiments. There was a traditional baking soda and vinegar volcano with a twist. The students buried a cup of baking soda in a mountain of sand. The cup had a tube in the bottom, and when vinegar was poured into the tube, it reacted with the baking soda. The mountain bulged and broke away, similar to the Mount Saint Helens eruption when the force occurred from the inside and the mountain burst open.
The day before, the students made a different type of volcano by submerging crayons in a plaster of Paris mixture, which hardened overnight. Then they heated the volcano in a water bath. As it heated, the crayons became less dense than the surrounding plaster, and pushed up to the surface. This models a volcanic eruption in which the heated magma is less dense than the mantle and is forced up and out of the earth onto the surface.
The day before, the students made a different type of volcano by submerging crayons in a plaster of Paris mixture, which hardened overnight. Then they heated the volcano in a water bath. As it heated, the crayons became less dense than the surrounding plaster, and pushed up to the surface. This models a volcanic eruption in which the heated magma is less dense than the mantle and is forced up and out of the earth onto the surface.
Brimmer and May School
69 Middlesex Road
Chestnut Hill, MA 02467
617-566-7462
Chestnut Hill, MA 02467
617-566-7462
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