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Making a home-made rocket
Presenter Dr Yan makes a home-made rocket capable of flying several metres into the air. The rocket consists of a plastic tub with a tight fitting lid, a fizzy tablet and tap water. Rockets, jets and propellers all work by pushing something away in one direction. This gives the craft itself a push in the opposite direction. Here, when the pressure inside the tub is enough to push the lid off, the force of the gas escaping downwards gives the tub a big push upwards. Published as part of the Bang Goes the Theory website: bbc.co.uk/bang/. Please note this clip is only available in Flash.
Pupils could create labelled diagrams to explain the scientific concepts involved.
Pupils could re-create the experiment investigating the effects of a range of tablets and water volumes, and observe and record their results.
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