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The terms in bold link to topics in the AQA, Edexcel, OCR, WJEC and CCEA A-level specifications, as well as the IB, Pre-U and SQA exam specifications.
Dirigible balloons provide a possible method of exploring other planets. Designing them requires an understanding of the behaviour of gases through the ideal gas law, describing the relationship between the pressure, volume and temperature of a gas, and some understanding of thermodynamics, including the work done by gases as they expand.
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