Combined Science GCSE
SI units and conversion
What SI units and conversion means in Combined Science GCSE, as defined for AQA.
Definition of SI units and conversion
Check what you remember
Read the wording for your board, then hide it and explain SI units and conversion in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Units must be consistent, with distance in metres, time in seconds and speed in metres per second, converting first before substituting.
Topics that use SI units and conversion
- Speed (AQA GCSE)
Related terms
- Average speed
- Average speed in context
- Consistent units
- Constant speed
- Distance
- Distance-time graph
- distance–time graph
- Equation rearrangement
Using SI units and conversion 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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