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SI units and conversion rules

SI units and conversion rules

Conversion map for km, m, cm, mm, kg, g, h, min and s, plus a worked example converting 36 km/h to 10 m/s

Physics equations usually work best when every value is in SI units such as metres, kilograms and seconds. A physical quantity is what you measure, and the unit tells you the scale of that measurement.

Converting units, significant figures and standard form Lesson

  1. GCSE
  2. /Physics
  3. /Converting units, significant figures and standard form

Step-by-step lessons covering Edexcel GCSE Physics Converting units, significant figures and standard form for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Master the required practical work and core equations early, since both papers can draw on content and maths skills from across the whole specification.

Lessons

Units and prefixesConverting units, significant figures and standard form