Unit consistency in calculations
What Unit consistency in calculations means in Combined Science GCSE, as defined for AQA.
Definitions of Unit consistency in calculations
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Reference: AQA
Checking that distance and time units are consistent, converting km to m or minutes to seconds where necessary.
Converting grams to kilograms and keeping powers of ten consistent when substituting values into the equation.
Time must be in seconds and energy in joules before dividing, so convert time to seconds if needed.
Topics that use Unit consistency in calculations
- Changes of state and specific latent heat (AQA GCSE)
- Power (AQA GCSE)
- Speed (AQA GCSE)
Related terms
- Rearranging equations
- Joule
- Unit conversion and standard units
- Ammeter
- Ampere
- Average speed
- Average speed in context
- Boiling
Using Unit consistency in calculations in the exam
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