Materials
Heavy cardboard or wooden boxes, without lids
Rubber bands in a variety of thicknesses
Instructions
1. Place a sand bucket into the sand/water table. Put an empty soda bottle upside down in the center of sand bucket.
2. Mix sand and water to make wet sand. Pack the wet sand around the soda bottle in the bucket.
3. Turn over the sand bucket inside a baking pan and remove the bucket. (This will be the volcano.)4. In one of the measuring cups, mix together the 1 tablespoon (15 g) flour and 1 tablespoon (15 g) baking soda.
5. Pour the mixture through a funnel into the soda bottle.
6. Add 15 to 20 drops of red food coloring to the bottle.
7. Pour about one half of the vinegar into the bottle.
8. This will cause the mixture to foam, like a volcano eruption! When the foaming stops, pour in the rest of the vinegar.
