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.
Vapour trails form when water vapour condenses to form droplets and then freezes to create ice crystals, which may sublime to return directly to vapour. A combination of atmospheric pressure, temperature and relative humidity determines whether these processes occur.
Your organisation does not have access to this article.
Sign up today to give your students the edge they need to achieve their best grades with subject expertise
Subscribe