ROKiT Bottle Rocket Water Pressure Kit, Pump Action

Product Information

You have put a lot in there. Y--you expecting that to fly a lot higher than mine then? Is that what you're--, is that what you're--? Next, put another marshmallow into the spoon. Pull the spoon down, stretching your rubber band, and release. Your marshmallow should fly. So as you can, we've got two identical cars. They are all ready to go. One car has one balloon. The other car has two. Now what we're gonna do is we're gonna race these cars against each other and see if my car gets to the finish line before Naomi's. Are you all set? Why? The sciency bit. Spinning the bottle makes the water inside spin like a whirlpool. INTERRUPTION It makes a long, thing v-shape in the middle down into the cap. This is called...

Yes. Yeah. I think we'll make the bra--, the base out of these straws then, do we? Got a bit of tape here. Lemon contains citric acid and it's when it's mixed with the bicarbonate of soda, it explodes. LAUGHS 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. I like science because it's about food. You know what, you cook food, there is something scientific about it. I like reactions, and I like playing the kid. Oh no, no. This is a challenge Carol, I've got to try and beat you somehow. That's about enough, isn't it?You go ahead. Here we go. Okay. Now, hopefully the bicarb will start to release very soon. Here we go. Whoa! LAUGHS The Sputnik look? I'm going to put a nice bandage around. The thing is, I'm putting so much on mine that it's gonna be quite weighty isn't it? If you repeat it several times more will get transferred. You now have tiny amount of static electricity on your ballon.

By the way we have not brought these in ourselves, I don't go around carrying little pictures of me self.

Science is a wonderful, wonderful thing, and I don't think that people should think, oh only my teachers and my parents and scientists can do sciencec, I'm just a kid, I can't really do that. Well, when you turned up with a bicycle pump, which was like cheating. I mean, if they said I could've had a bicycle pump--. I did some stuff with Blue Peter which ended up as a complete disaster, glitter everywhere including in the camera lens. As air escapes from the balloon it is pushed through the holes you make in the bottle cap and the CD in all directions because of the shapes, smoothness and weight distribution of the hovercraft the escaping air creates a thin cushion between the CD and the surface. The cushion of air dramatically reduces the friction between the CD and the surface and allows your Maybe do like, the water red INTERRUPTION and then, when we come to do the baby oil, then we can make that blue.

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. I think mum, I'm sorry but I don't think you'll be as good at science because you just don't like mess. If it's icy outside our front door, so that you don't slip over I put alt outside, so that it defrosts the snow. So how's this gonna turn into ice cream? I loved science. I loved all the experiments, to be honest. Any time I had to put a lab coat and LAUGHS put the glasses on, put a Bunsen burner on, I was in heaven. Is this actually gonna take off with vinegar and bicarbonate of soda? Surely, we've gotta get the right balance then.Yeah, exactly. So let's have a look. Let's compare these balloons. So I had, uh, two balloons on my car. And it gave a bigger push. So your prediction has been proven. Put your hovercraft on a flat service. Carefully let go of the balloons and give the CD a little push. Take the bottle outside and connect the pump to the needle adaptor. Ours wouldn’t stand up on the fins so we rested it on a box, but if you make some strong fins it should stand up by itself. Oh no. LAUGHTER Why, the science-y bit. When an object falls there are two main forces acting on the falling object.