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Questions and Answers
SI base units, or Systeme International d'unites, consists of the metre, kilogram, second, ampere, kelvin, mole and ______
SI base units, or Systeme International d'unites, consists of the metre, kilogram, second, ampere, kelvin, mole and ______
candela
Unit prefixes are common base-10 or base-2 powers multiples and submultiples of ______
Unit prefixes are common base-10 or base-2 powers multiples and submultiples of ______
units
A base unit of measurement is a unit of measurement adopted for a base ______
A base unit of measurement is a unit of measurement adopted for a base ______
quantity
A derived unit is a unit for a derived quantity, involving the combination of quantities with different ______
A derived unit is a unit for a derived quantity, involving the combination of quantities with different ______
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A coherent derived unit involves no conversion ______
A coherent derived unit involves no conversion ______
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Study Notes
SI Base Units
- Consist of the following fundamental units: metre, kilogram, second, ampere, kelvin, mole, and candela.
- Measure different physical quantities: length, mass, time, electric current, temperature, amount of substance, and luminous intensity.
Unit Prefixes
- Represent standard multiples and submultiples based on powers of ten (base-10) or powers of two (base-2).
- Used to simplify the expression of very large or very small measurements (e.g., kilo- for 10^3, milli- for 10^-3).
Base Unit of Measurement
- A unit that is established and standardized for a fundamental physical quantity.
- Serves as a reference point for measuring other quantities.
Derived Units
- Created from the combination of base units to express derived quantities, which are measurements resulting from physical laws or equations.
- Examples include units like newton for force, which combines kilogram, metre, and second.
Coherent Derived Units
- These units are derived such that they do not require conversion factors when expressed in terms of base units.
- Maintain consistency and clarity in scientific communication, ensuring straightforward relationships among quantities.
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