The invention of the bottle rockets simple
.The used bottles, soda bottle all brands, but the bottle mouth Pepsi is smaller, the bottle 2 leaves first do a luggage wind leaves 2 cut in half. The upper part. As the rocket head was connected with the air storage is which is the tail.The rockets used cover at the tail wing winged rocket 4 or more as needed to try ว่ากี่ wings will be good. Or the different rear wing to use the materials, whatever. Let's see what kind would be good to สังเกตความแตกต่าง.The experiment research study, practice, observation and determination of cause and effect, practice to solve the problem of the cause!
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