20 Questions
What are the units for the fundamental or base quantities called?
Fundamental units
What is the result of a measurement of a physical quantity expressed by?
A number accompanied by a unit
What are the units obtained for the derived quantities called?
Derived units
What is a complete set of units, both base units and derived units, known as?
System of units
What were the base units for length, mass, and time in the FPS system?
Foot, pound, second
What does the CGS system stand for?
Centimetre-Gram-Second system
What type of comparison is involved in the measurement of any physical quantity?
Comparison with a fixed quantity
What do we need only a limited number of for expressing all physical quantities?
Units
What are the units for expressing all other physical quantities as combinations of the base units called?
Derived units
What do scientists of different countries use for measurement?
Different systems of units
What is the result of a measurement of a physical quantity expressed by?
A number accompanied by a unit
What are the units for the fundamental or base quantities called?
Fundamental units
What type of comparison is involved in the measurement of any physical quantity?
Comparison with a chosen reference standard
What is a complete set of units, both the base units and derived units, known as?
System of units
What were the base units for length, mass, and time in the CGS system?
Centimetre, gram, second
In the FPS system, what were the base units for length, mass, and time?
Foot, pound, second
What do we need only a limited number of for expressing all physical quantities?
Units
What are the units obtained for derived quantities called?
Derived units
Which systems of units were extensively in use till recently?
CGS, FPS (or British), MKS
What is used as an internationally accepted reference standard in measurement?
Unit
This quiz covers the introduction to the measurement of physical quantities, comparison with internationally accepted reference standards called units, and expressing physical quantities using numerical measures and units. Test your understanding of the foundational concepts of units and measurements.
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