Worksheet: SI Unit Definitions
In this worksheet, we will practice recognising the units of the SI unit system and the physical quantities that it is used to measure.
Which of the following most correctly describes the difference between fundamental and derived physical quantities?
- AFundamental quantities can have more than one unit, but derived quantities can only have one unit.
- BDerived quantities can have more than one unit, but fundamental quantities can only have one unit.
- CFundamental quantities can be defined in terms of derived quantities.
- DDerived quantities can be defined in terms of fundamental quantities.
- EFundamental quantities were proposed before derived quantities were proposed.
Which of the following physical quantities has the SI unit mole?
- DAmount of substance
Which of the following physical quantities has the SI unit candela?
- ARadiant intensity
- BRadiant flux
- CLuminous flux
- ELuminous intensity
Which of the following SI units is defined as being equal to 1,650,763.73 wavelengths of the red-orange light emitted in a vacuum by atoms of krypton-86?
- AThe candela
- BThe steradian
- CThe mole
- DThe second
- EThe meter
Which of the following SI units is defined by reference to the properties of a unique, standard object held at the International Bureau of Weights and Measures?
- AThe meter
- BThe kilogram
- CThe steradian
- DThe candela
- EThe mole
Which of the following is the symbol for the SI unit of absolute temperature?
Which of the following SI units is defined as being equal to the interval in which atoms of cesium-133 emit 9,192,631,700 waves?
- AThe candela
- BThe mole
- CThe second
- DThe meter
- EThe steradian