Podcast
Questions and Answers
Units are ______ or an amount used as a standard of measurement.
Units are ______ or an amount used as a standard of measurement.
quantity
A ______ quantity is the quantity that can be measured and consists of a numerical magnitude and a unit.
A ______ quantity is the quantity that can be measured and consists of a numerical magnitude and a unit.
physical
Q = N ______ is the formula for physical quantity.
Q = N ______ is the formula for physical quantity.
u
Measurement is essentially a ______ process.
Measurement is essentially a ______ process.
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Length, mass, time, temperature etc are called ______ quantities.
Length, mass, time, temperature etc are called ______ quantities.
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Area, Volume, velocity etc are called ______ quantities.
Area, Volume, velocity etc are called ______ quantities.
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The units of basic quantities are called ______ units.
The units of basic quantities are called ______ units.
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There are three ______ of units.
There are three ______ of units.
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The unit of length in the MKS and SI system is ______.
The unit of length in the MKS and SI system is ______.
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The unit of time is ______ in all system of measurement.
The unit of time is ______ in all system of measurement.
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Study Notes
Units and Measurements
- A unit is a quantity or amount used as a standard of measurement.
- Units consist of a numerical magnitude and a unit, represented as Q = Nu, where Q is the physical quantity, N is the number, and u is the unit.
Physical Quantities
- Physical quantities are quantities that can be measured.
- Examples of physical quantities include length, mass, time, and temperature.
Derived Quantities
- Derived quantities are quantities that are derived from physical quantities.
- Examples of derived quantities include area, volume, and velocity.
Basic and Derived Units
- The units of basic quantities are called basic units.
- The units of derived quantities are called derived units.
Systems of Units
- There are three systems of units: the British system, the Metric system, and the SI unit system.
The British System
- The British system is based on foot (ft), pound (lb), and second (s).
- It is also called the FPS system.
The Metric System
- The Metric system consists of two subsystems: the CGS system and the MKS system.
- The CGS system is based on centimeter (cm), gram (g), and second (s).
- The MKS system is based on meter (m), kilogram (kg), and second (s).
The SI Unit System
- The SI unit system is a modified form of the MKS system.
- It is the most widely used system of units.
Units of Length, Mass, and Time
- The unit of length is meter (m) in the MKS and SI systems, centimeter (cm) in the CGS system, and foot (ft) in the FPS system.
- The unit of mass is kilogram (kg) in the MKS and SI systems, gram (g) in the CGS system, and pound (lb) or slug (sl) in the FPS system.
- The unit of time is second (s) in all systems of measurement.
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Description
Test your knowledge of Units and Measurements with this fill-in-the-blanks quiz, covering topics such as physical quantities, measurement, and more from Chapter 1.
