Measurements

• Units of Measurement

  The units used for scientific measurements are those of the metric system.
• International System of Units (SI Units)

  • Modern form of the metric system
  • Based on the fundamental units called SI based units
  • Based on prefixes, decimals, and power of 10
• K

  Kilo
• h

  Hecto
• da


  Deca
• d

  Deci
• c

  Centi
• m

  Milli
• 𝜇

  Micro
• SI Base Units is composed of seven fundamental units of the SI system.

  1. Mass
  2. Length/Distance
  3. Time
  4. Temperature
  5. Amount of Substance
  6. Luminous Intensity
  7. Electric Current
• m

  Mass
• d

  Length/Distance
• t


  Time
• T

  Temperature
• n

  Amount of substance
• italicized l


  Luminous intensity
• l

  Electric current
• Mass


  Kilogram
• Length/Distance


  Meter
• Time 


  Seconds
• Temperature


  Kelvin
• Amount of substance

  Moles
• Luminous Intensity


  Candela
• Electric Current

  Ampere
• Derived SI Unit

  • “derived” = originating from something.
  • The SI base units are used to formulate derived units.
  • A derived unit is obtained by multiplication or division of one or more of the base units.