Measurement and units
What Measurement and units means in Combined Science GCSE, as defined for AQA.
Definitions of Measurement and units
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
Check what you remember
Read the wording for your board, then hide it and explain Measurement and units in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Extension must be expressed in metres before substitution into an equation, and a length given in centimetres or millimetres is converted to metres first.
Force is in newtons, distance in metres and work in joules, and work done is measured in joules (J), not watts (W).
Giving a final answer for speed with the unit m/s, converting other units such as km/h before substitution.
Work is a scalar measured in joules, and the joule is the newton-metre.
Topics that use Measurement and units
- Forces and elasticity (AQA GCSE)
- Speed (AQA GCSE)
- Work done and energy transfer (AQA GCSE)
Related terms
- Force
- Work done
- Average speed
- Average speed in context
- Balanced forces
- Bending
- Compression
- Consistent units
Using Measurement and units in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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