BRAINCAKESI Base Units
Every physical quantity is a number multiplied by a unit. The SI system (Système International) is built on a small set of base quantities, each with its own base unit. All other units are made from these.
The six base quantities and units you need for AQA are:
• mass: kilogram (kg)
• length: metre (m)
• time: second (s)
• amount of substance: mole (mol)
• temperature: kelvin (K)
• electric current: ampere (A)
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More in Measurements and Errors
- Derived Units
- Prefixes
- Converting Units
- Random and Systematic Errors
- Precision, Repeatability and Reproducibility
- Resolution and Accuracy
- Absolute, Fractional and Percentage Uncertainty
- Combining Uncertainties
All 12 lessons in Measurements and Errors · All AQA AS-level Physics topics