Exit to Physical quantities, units and measurement

Measurement and units written questions

Answer G3 Science Physics questions on measurements, prefixes and instruments, using worked guidance to review readings and units.

  • SEC G3 Combined Science Physics component 2027
Learning goals
  • Represent a physical quantity with a numerical magnitude and unit
  • Recall the six prescribed SI base quantities and their units
  • Use the prescribed SI prefixes from nano to tera
  • Compare orders of magnitude from a typical atom to the Earth
  • Select and justify measuring instruments by range and precision
  • Distinguish scalar and vector quantities and give examples

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Practise questions on the skills you are learning. This is for practice only and doesn’t count towards your course progress.

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