G3 Pure Physics / O‑Level Physics: Physical Quantities, Units and Measurement structured questions
Structured and data-based Paper 2 practice for measurement: SI units, prefixes, instruments, and errors.
Learning objectives
- 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
- Add two vectors graphically to determine a resultant
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