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Measurements - Objectives
Content
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Use of SI Units and their prefixes
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Errors and uncertainty
Learning Outcomes
Candidates should be able to:
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know fundamental (base) units
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use mass, length, time, quantity of matter, temperature and eletric current and their associated SI units (no knowledge of the candela is required)
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know and use SI prefixes: T, G, M, k, c, m, μ, n, p and f
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understand and use standard form
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understand that the number of significant figures in the value of a quantity is linked to the uncertainty in that value and hence use an appropriate number of significant figures in their calculations
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understand the nature of random and systematic errors
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understand and use the terms precision, repeatability, reproducibility, resolution and accuracy
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understand that absolute, fractional and percentage errors represent uncertainty in the final answer for a quantity
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how to combine absolute and percentage uncertainties
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represent uncertainty in a data point on a graph using error bars
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determine the uncertainties in the gradient and intercept of a straight-line graph
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understand that individual points on a graph may or may not have associated error bars
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