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SI Measurements and Unit Conversions - A Guide for Scientists

This guide provides an overview of SI measurements (also known as the metric system) and how to convert between different units. It includes important base units to remember, prefixes for unit conversion, and instructions on how to measure area, mass, volume, and density. This is a valuable resource for anyone in the scientific field.

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SI Measurements and Unit Conversions - A Guide for Scientists

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  1. Thursday, August 18, 2011 • Pick up the Papersfrom the side table. • Turn in your Parent Letter or Getting to Knowto your period’s colored drawer. • Write down your HW in your Agenda!!!  • Get out your Directed Reading& Checking Pen

  2. Measurement & Metrics

  3. SI Measurements(also known as “metric system”) • “SI” stands for “System International” or “International System of Measurement”

  4. SI Measurements(also known as “metric system”) • What about it? • Common Language for scientists • Based on units of 10 • Multiply or divide to go up or down when converting units • Prefixes determine “how much” of a unit

  5. SI Measurements(also known as “metric system”) Important BASE units to remember: METERS = m (measures distance or length) • Measure with ruler/meterstick

  6. LITERS = L (measures volume — how much space something takes up) • Measure with graduated cylinder/beaker • Or with a ruler (length x height x width)

  7. GRAMS = g (measures mass) • Measure with triple beam balance/scale

  8. oCELSIUS = oC (measures temperature) • Measure with thermometer

  9. Important PREFIXES to remember: k = kilo- (means “1000”) h = hecto-(means “100”) D (da) = deca-(means “10”) BASE UNIT (liter, meter, gram) d = deci-(means “1/10” or 0.1) c = centi- (means “1/100” or .01) m = milli- (means “1/1000” or .001)

  10. How to Measure AREA = length X width • Units: SquaredUnits • Examples: m2, cm2, km2

  11. How to Measure MASS: measure of the amount of matter in an object • Use a Triple Beam Balance to add the ones, tens, and hundreds grams units ** Triple Beam Balance Practice Sheet**

  12. How to Measure VOLUME: how much space a 3-D object takes up • Units for liquids: Liters/mL • Units for solids: cm3 ** Graduated Cylinder Practice Sheet**

  13. How to Measure DENSITY = amount of matter in a given volume • Density = mass volume • Units: g/mLORg/cm3

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