Focusing on the reaction:
* Does the amount of baking soda used affect the height of the eruption in a baking soda and vinegar volcano?
* Does the temperature of the vinegar affect the speed of the reaction and the size of the eruption in a baking soda and vinegar volcano?
* Does the concentration of vinegar (e.g., white vinegar vs. apple cider vinegar) affect the eruption of a baking soda volcano?
Focusing on the volcano itself:
* Does the shape of the volcano affect the direction and height of the eruption in a baking soda and vinegar volcano?
* Does the material used to build the volcano (e.g., clay, cardboard, plastic) affect the eruption?
Adding a twist:
* Can you create a baking soda volcano that erupts with a specific color by adding food coloring?
* Can you create a baking soda volcano that erupts with a specific scent by adding essential oils?
Remember to clearly define your variables (what you are changing) and control variables (what you keep the same) when designing your experiment.
