No Leak Plastic bag
Today Mr Power demonstrated to the Tui team this amazing science experiment using a plastic bag and skewers. The plastic bags were full of water but when they were pierced with a skewer, surprisingly the water did not gush out. Why?
Well Luke, Helene, Estelle and Tom set out to find out why this was so.
Tom & Estelle: "The zip lock plastic bag was made out of polymers. Think of the polymers as long strands of freshly cooked spaghetti. The tip of the skewer can easily slip between and push apart the flexible strands of spaghetti, and the the flexible property helps to form a temporary seal against the edge of the skewer.
Tino Pai guys. You've done a great job of explaning why.