volcano

Today I did an experement of a volcano.I got it from Hanukkah.This is how I did it: I put a base,then I put a tube on the base,next I fed through some string through the holes.I put plaster all over the string so you can not see the string anymore.I waited for the plaster to dry.When it dried I painted the volcano.Then I took some baking soda and put it through the tube,I also took some vinegar and put it in          the tube.For better look I put some food coloring in.Next I watched the volcano erupt!It was amazing!