5 Questions
Which of the following is a unit of measurement adopted for a base quantity?
Metre
What is a unit multiple?
An integer multiple of a given unit
What is a coherent derived unit?
A unit involving no conversion factors
What are base quantities in the context of measurement?
A conventionally chosen subset of physical quantities
Which physical quantity is related to momentum?
Mass
Study Notes
Units of Measurement
- A unit of measurement adopted for a base quantity is called a base unit.
- A unit multiple is a unit that is a multiple of a base unit, obtained by multiplying the base unit by a power of 10 (e.g., kilogram, centimeter).
- A coherent derived unit is a unit of measurement that is derived from base units, and is used to measure derived quantities (e.g., velocity, force).
Base Quantities
- Base quantities are physical quantities that cannot be expressed in terms of other quantities, and are used as a reference for measurement (e.g., length, mass, time).
- Seven base quantities are recognized in the International System of Units (SI): length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity.
Momentum
- Momentum is a physical quantity related to the product of an object's mass and velocity.
Test your knowledge of SI base units and fundamental quantities with this quiz. Challenge yourself with questions about the meter, kilogram, second, ampere, kelvin, and more.
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