What you need:
- Carved pumpkin
- Baking soda
- Food colouring
- Carve the pumpkin. If you want a cool explosion, try not to make the bottom opening (the mouth) too large
- Put about four tablespoons of baking soda on the bottom of the pumpkin
- Add a few drops of food colouring
- Pour in the vinegar and watch the explosion!
For more information on this and other fun experiments, visit http://www.growingajeweledrose.com/2012/09/erupting-pumpkins-experiment-for-kids.html.