We went to the science center and made pop bottle rockets. It was so cool and fun. Our rocket didn't go very high but it was still fun to watch. Others went higher. One Dad got really soaked. We used citric acid and baking soda. The air compressing against the walls on the inside of the bottle made it fly. It was from air pressure from the chemical reaction.
You take an empty soda/water bottle, put it upside down and add cardboard wings. Go outside and fill your bottle to the first line with citric acid and wrap baking soda in toilet paper . Take the baking soda, pop it in the bottle, quickly put in the cork, shake it and watch it fly!
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