ROKiT Bottle Rocket Water Pressure Kit, Pump Action

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This reminds me of when I was doing this for my daughter, because she had all the instructions. They'd done it in school and, you know, when you mix bicarb and vinegar, I mean, they're just things you've got in the cupboard, in the kitchen, and... Mummy's very good at cooking, uh which is also quite science-y. And Daddy's good at like, knowing like facts. LAUGHTER So I think they're both gonna-- I think they're both gonna be very good. Rice is slightly elastic and so eventually when the blade is pushed in, the compact grains will bend tightly against it, allowing you to lift the jar using only the handle of the knife.

You provide a soda bottle, air pump, tire pressure gauge, and other household items. We also recommend protective safety goggles. That doesn't make any sense to me, what you've just said, but I'll--I'll--, again, I'll take your word for it, mate. That is so cool. INTERRUPTION It is actually working even INTERRUPTION though we put it in afterwards. It's very cool. Push your third marshmallow onto the tied end and make a mark on this marshmallow. And, make a mark on it. Put an X on it.

Okay, guys. So, next we're going to be making the hoop glider, which I am so excited about because this sounds really fun. Maybe do like, the water red INTERRUPTION and then, when we come to do the baby oil, then we can make that blue. Put your hovercraft on a flat service. Carefully let go of the balloons and give the CD a little push. LAUGHS It's in the bag. Now one I have learnt is apparently the reaction is better when it's warm, so you don't want the vinegar to get too cold. What I'm aiming for. Well it's about to get about that high and if it gets any further than that to hit the studio.

Why does this happen, is you don't need to apply much pressure the first time you push the knife into the rice, as the grains sit loosely in the jar. Each time the handle is pushed into the rice, the friction increases, opposing the force of gravity.Now if you've got children in the house and you've tried to bake a cake recently. Have you done that? I always think, well I think that mum is very good at science, but maybe she'll make a couple of mistakes that will ruin the experiment. A bicycle pump. I'm gonna add extra air inside the little thing and hope that it will increase the reaction. It could go terribly wrong. Darcey let's see what was happening there. When you rubbed the balloon on your hair a few electrons are transferred from the hair to the balloon.

I think, uh Cherry's going to be good at doing the experiments. We, we see quite a lot of that, uh quite often certain things going-- mishaps and going wrong.

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