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Flashcards covering key definitions and concepts in Edexcel Physics A Level, specifically focusing on measurement and experimental accuracy.
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11 Terms
Accuracy
How close a measurement is to its true value.
Base Unit
A fundamental unit of measurement that is defined independently and cannot be expressed in terms of other units.
Base Units
The set of seven basic measures from which all other SI units can be derived.
Estimation
A reasonable approximation of a value.
Precision
How close a set of repeated measurements are to each other.
Random Error
The unpredictable variation in a measurement.
Repeatability
The ability of the same person using the same equipment to obtain the same result on the same experiment multiple times.
Reproducibility
The ability of different people with different equipment to measure the same quantity and obtain similar results.
Resolution
The smallest interval that a measuring device can measure.
Systematic Error
A consistent shift in readings causing a deviation from the true value.
Uncertainty
A reasonable range of values that could contain the true value of a measurement.
Note 
Flashcards (20)