Physics A-Level
Standard form
What Standard form means in Physics A-Level, as defined for AQA.
Definitions of Standard form
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Reference: AQA
Written as a × 10ⁿ, where 1 ≤ a < 10, keeping very large and very small values readable and reducing place-value errors.
Converted values are presented in standard form with an appropriate number of significant figures and the correct unit.
A value written as a × 10ⁿ, from which the exponent n is identified to find the order of magnitude.
Topics that use Standard form
- Estimation of physical quantities (AQA A-Level)
- Use of SI units and their prefixes (AQA A-Level)
Related terms
- Base units
- Communication of assumptions and uncertainty
- Dimensional analysis
- Dimensional consistency and unit conversion
- estimation
- Order of magnitude
- Order-of-magnitude reasoning
- S.I. base quantities
Using Standard form in the exam
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