Make a Volcano Erupt

You can make a volcano with "red hot" lava flowing down the sides. Although it may not be real lava, it will work like a real volcano.
You will need the following:
1 Pan or baking dish
Vinegar
Small Plastic bottle
Baking soda
Sand
Gravel
Red food coloring
Funnel

First, add red food colorng to your vinegar to make the red hot lava.
Second, Using the funnel, half fill the bottle with baking soda. Then stand the bottle upright in the middle of your pan/dish.

Third, pile gravel then sand around the bottle to make the volcano.


Last, quickly pour some red vinegar into the bottle and watch the volcano erupt.



***Bubbles of carbon dioxide gas form in the bottle and force out the red vinegar causing the eruption. ***