Unit 1 Measurements and uncertainties

Fundamental and derived SI units

Scientific notation and metric multipliers

Significant figures

Orders of magnitude

Estimation

Random and systematic errors

Absolute, fractional and percentage uncertainties

Error bars

Uncertainty of gradient and intercepts ​​

Vector and scalar quantities

Combination and resolution of vectors

Using SI units in the correct format for all required measurements, final answers to calculations and presentation of raw and processed data

Using scientific notation and metric multipliers

Quoting and comparing ratios, values and approximations to the nearest order of magnitude

Estimating quantities to an appropriate number of significant figures

Explaining how random and systematic errors can be identified and reduced

Collecting data that include absolute and/or fractional uncertainties and stating these as an uncertainty range (expressed as: best estimate ± uncertainty range)

Propagating uncertainties through calculations involving addition, subtraction, multiplication, division and raising to a power

Determining the uncertainty in gradients and intercepts

Solving vector problems graphically and algebraically