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Questions and Answers
Which units are part of the SI base units?
What is a base unit of measurement?
What is a derived unit?
What is a unit multiple?
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What are unit prefixes?
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Study Notes
SI Base Units
- The International System of Units (SI) consists of seven base units.
- The base units include: meter (m) for length, kilogram (kg) for mass, second (s) for time, ampere (A) for electric current, kelvin (K) for temperature, mole (mol) for the amount of substance, and candela (cd) for luminous intensity.
Base Unit of Measurement
- A base unit serves as a fundamental measurement for a quantity and is not defined in terms of other units.
- Base units are the foundation for all other measurements and forms the basis for derived units.
Derived Unit
- Derived units are formed by combining base units through multiplication or division.
- Examples include newton (N) for force, which is derived from kg·m/s², and joule (J) for energy, which is derived from N·m.
Unit Multiple
- Unit multiples are expressions that represent a quantity as a multiple of a base unit, often using a numerical prefix.
- They facilitate easier expression of large or small quantities without altering the base unit's definition.
Unit Prefixes
- Unit prefixes denote powers of ten and modify the size of the base unit in a systematic manner.
- Common prefixes include kilo- (10³), centi- (10⁻²), milli- (10⁻³), and mega- (10⁶), each indicating a specific factor by which to multiply the base unit.
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Description
Test your knowledge of base units of measurement with this quiz! Challenge yourself with questions about the SI base units, including the metre, kilogram, second, ampere, and kelvin.
