Straw Rafts

Miss Mg we had to plan, design, build and test a product or theory. Mrs Mg gare us a challenge. We had to plan+design+build a straw raft to float with 40g of weight on it. We could only use 20 straw and easy tape to ripe and put on. We research about how rafts float and found Being gaseous bubbles with positive buoyancy, they push the straw up until the remaining buoyant force balances the mass of the straw. You can often dislodge the bubbles from the straw by jiggling it in the soda, and thus get the straw to settle closer to the bottom of the bottle. We found making the raft challenging because it took a long time.