Measurements and Units
- β’fundamental units: length, mass, time, electric charge, temperature, luminous intensity, amount of substance
- β’derived units: weight, area, volume, force, speed etc.
- β’measuring instruments: vernier caliper, metre rule, micrometer screw gauge, measuring cylinder, stop watch and beam balance
- β’derived physical quantities and their units
- β’dimensions
- β’limitations of experimental measurements
Objectives β candidates should be able to:
- βidentify the units of length, area and volume
- βuse different measuring instruments
- βdetermine the lengths, surface areas and volume of regular and irregular bodies
- βidentify the unit of mass
- βuse simple beam balance
- βidentify the unit of time
- βuse different time-measuring devices
- βrelate the fundamental physical quantities to their units
- βdeduce the units of derived physical quantities
- βdetermine the dimensions of physical quantities
- βuse the dimensions to determine the units of physical quantities
- βtest the homogeneity of an equation
- βdetermine the accuracy of measuring instruments
- βestimate simple errors
- βexpress measurements in standard form