In this experiment, kids will make their own volcano and learn how they work. Below are all of the steps and materials you will need.
MATERIALS NEEDED:
- Flour
- Salt
- Cooking oil
- Baking soda
- Vinegar
- Dish soap
- Food coloring
STEPS FOR EXPERIMENT:
- Next mix 6 cups of flour, one cup of salt, 4 tablespoons of cooking oil and warm water. (Tip: Mix the water in slowly so the consistency stays firm and not soupy.)
- Stand the soda bottle in the middle of the dough mix, and mold the dough around it into a volcano shape.
- Next fill the bottle a little more than halfway with water, red food coloring, a few drops of dish soap, and two tablespoons of baking soda.
- Slowly pour vinegar into the bottle and watch the eruption. (Tip: You may want to go outside for this part.)
EXPLANATION:
The pressure inside of the bottle builds up because of a chemical reaction, and the same things happens inside of a volcano. The explosivity of an eruption depends on the composition of the magma inside of the volcano. If it’s thicker then gases can’t escape as easily and it explodes more violently.
