SI Base Units Quiz
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Questions and Answers

What is a base unit of measurement?

  • A unit for a derived quantity
  • A unit fraction of a given unit
  • An integer multiple of a given unit
  • A unit of measurement adopted for a base quantity (correct)

    • What are the SI base units?

  • Metre, kilogram, minute, ampere, kelvin, mole, and candela
  • Gram, liter, second, watt, joule, mole, and candela
  • Metre, kilogram, second, ampere, kelvin, mole, and candela (correct)
  • Metre, gram, second, ampere, kelvin, mole, and lumen

    • What is a unit multiple?

  • A unit for a derived quantity
  • A unit fraction of a given unit
  • A unit of measurement adopted for a base quantity
  • An integer multiple of a given unit (correct)

    • What is a derived unit?

    <p>A unit for a derived quantity, involving the combination of quantities with different units</p> Signup and view all the answers

    What is a coherent derived unit?

    <p>Involves no conversion factors</p> Signup and view all the answers

    Which of the following is a base quantity according to the text?

    <p>Time</p> Signup and view all the answers

    What is the SI unit for measuring temperature?

    <p>Kelvin</p> Signup and view all the answers

    Which of the following is a derived unit according to the text?

    <p>Newton</p> Signup and view all the answers

    What are unit prefixes commonly based on?

    <p>Base-10 or base-2 powers</p> Signup and view all the answers

    What is a unit submultiple according to the text?

    <p>A submultiple or a unit fraction of a given unit</p> Signup and view all the answers

    Study Notes

    Base Units and Measurement

    • A base unit of measurement is a standard unit of measurement in a system of units.

    SI Base Units

    • There are seven SI base units, which are the foundation of the International System of Units (SI).
    • The seven SI base units are:
    • Meter (m) for length
    • Kilogram (kg) for mass
    • Second (s) for time
    • Kelvin (K) for thermodynamic temperature
    • Ampere (A) for electric current
    • Mole (mol) for amount of substance
    • Candela (cd) for luminous intensity

    Unit Multiples and Submultiples

    • A unit multiple is a unit that is a multiple of a base unit, formed by prefixing a multiplier to the base unit.
    • A unit submultiple is a unit that is a fraction of a base unit, formed by prefixing a submultiple to the base unit.

    Derived Units

    • A derived unit is a unit that is derived from base units, used to express quantities that are not covered by the base units.
    • A coherent derived unit is a derived unit formed by combining base units according to the laws of physics, without any numerical factor.

    Base Quantities

    • Base quantities are physical quantities that cannot be expressed in terms of other quantities, such as length, mass, time, and temperature.

    SI Units for Temperature

    • The SI unit for measuring temperature is the Kelvin (K).

    Derived Units Examples

    • Examples of derived units include velocity (m/s), force (N), and energy (J).

    Unit Prefixes

    • Unit prefixes are commonly based on powers of 10, such as kilo- (10^3) and centi- (10^-2).

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    Description

    Test your knowledge of fundamental units of measurement with this quiz on SI base units. Challenge yourself with questions about the meter, kilogram, second, ampere, kelvin, and more.

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