OCR A-Level Physics B Modules 1&2 - Practical Skills 0.0 / 5 ? PhysicsPractical SkillsA2/A-levelOCR Created by: paper-weightCreated on: 02-05-18 15:05 Accuracy A measure of how close a measurement is to the true value 1 of 17 Accurate Close to the true value 2 of 17 Calibration Determining the relation between output and true input value 3 of 17 Iterative model A mathematical treatment where small changes to variables are made at regular time intervals, Δt 4 of 17 Percentage Uncertainty The uncertanty given as a percentage of the measurement 5 of 17 Precise Repeated measurements are close together 6 of 17 Precision A measure of how close repeated measurements are to each other 7 of 17 Random Error An error in the results of an experiment which varies each time for the same setup 8 of 17 Repeatable An experiment can be repeated multiple times to achieve the same results 9 of 17 Reproducible An experiment can be repeated by someone else using different equipment or results to achieve the same answer 10 of 17 Resolution The smallest detectable change in input 11 of 17 Response time The time interval between a change in input and the corresponding change in output 12 of 17 Sensitivity The ratio of the output to the input 13 of 17 Systamatic Error An error in the setup of an experiment which is the same for every repetition using the same setup 14 of 17 Valid The results answer the origional question 15 of 17 Validity A measure of how well the results answer the origional question 16 of 17 Zero error The output for zero input 17 of 17

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