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Avião de Papel Dardo Clássico
Oh come on we all know how to fly these! Well I’ll just give a refresher course. You throw this plane overarm and on the level. It will fly quite far and very straight if you have made it correctly. It is very hard to make it so poorly that it crashes. It flies very well indoors and out.
Foguete de Papel
Place the rocket on the surface of a sink full of pure water (there must be no soap in the water so rinse the sink out once first). Now drip some washing up liquid into the hole in the center of the rocket cut out. The rocket should shoot across the water.
This is showing the effect of surface tension. At the back of the rocket where the washing up liquid exudes the surface tension becomes zero but it is still high elsewhere around the rocket. Therefore the resultant force propels the rocket forward. The sink will have to be emptied and refilled before you do this again. This is bad for the environment in the amount of water you use so don’t do this too may times.


