Science - Exploding Volcano

This is a science project that I recently did. First, I made a mixture of plaster of paris, rock, sand, and water. I then covered the plastic volcano mold with the mix. It dried very quickly. Then I made the mixture for the "lava." The mixture was food coloring, vinegar, and liquid soap. I put some baking soda into the volcano at the top. I put the "lava" mixture in a bottle, then squeezed it through the tube until it came out of the top. When the mixture hit the baking soda, it "exploded."

The project was a success and I want to do it again.