Scientific Notation

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What is the Unit System for Science Measurements

The unit system for science measurements, based on the metric system, is called the International System of Units (Système International d’Unités) or SI units.

<p>The unit system for science measurements, based on the metric system, is called the International System of Units (Système International d’Unités) or SI units.</p>
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Prefix Multipliers

  • Kilometer or Kilogram (x1000 bigger)

  • Gigameter or Gigagram (x1,000,000,000 bigger)

<ul><li><p><strong>Kilometer or Kilogram (x1000 bigger)</strong></p></li><li><p><strong>Gigameter or Gigagram (x1,000,000,000 bigger) </strong></p></li></ul><p></p>
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Continued Prefix Multipliers

  • Centi-hundredth

  • Milli-thousandth

  • Micro (μ) - one millionth

<ul><li><p><strong>Centi-hundredth</strong></p></li><li><p><strong>Milli-thousandth</strong></p></li><li><p><strong>Micro (μ) - one millionth </strong></p></li></ul><p></p>
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How to Choose Prefix Multipliers?

  • Choose the prefix multiplier that is most convenient for a

    particular measurement.

  • Pick a unit similar in size to (or smaller than) the quantity

    you are measuring.

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How is Volume Derived as a Unit?

  • A derived unit is formed from other units.

  • Many units of volume, a measure of space, are derived

    units.

  • Any unit of length, when cubed (raised to the third power),

    becomes a unit of volume.

  • Cubic meters

    cubic centimeters

    and cubic millimeters

    are all units of volume.

  • Liquids measure in graduated cylinder (mL or L)