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MEASUREMENT & SCIENTIFIC TOOLS

MEASUREMENT & SCIENTIFIC TOOLS. The International System Of Units. The International System of Units (SI Units) - the internationally accepted system for measurement.

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MEASUREMENT & SCIENTIFIC TOOLS

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  1. MEASUREMENT & SCIENTIFIC TOOLS

  2. The International System Of Units • The International System of Units (SI Units)- the internationally accepted system for measurement. • They use a standard of measurement called base units and a set of prefixes to tell the size of the unit. • Easy to convert one SI unit to another because SI is based on units of ten

  3. Common SI Units & Conversions Meter (m)- the basic SI unit for length(distance) Grams (g)- The basic SI unit for mass. • Mass is a measure of the amount of matter in an object Volume- the amount of space matter occupies. • Solids – cubic meters (m3) • Liquids- liters (l) Temperature-measure of how hot or cold something is. measure in: • Celsius(C) • Kelvin (K)

  4. Significant Figures • The # of digits in a measurement that you know with a certain degree of reliability. • Limit to 2 significant figures after the decimal. Ex: • 127.654321 = 127.65 • 56.28765 = 56.29

  5. Scientific Tools • Tool- anything that helps you do a task. • Measuring Lengths & Distances (m): • Rulers • Meter sticks • tape measure • Measuring Volume of a liquid (l): • Graduated cylinders • Beakers • Flasks • Test tubes

  6. Measuring Mass of an object (grams-g) • Triple beam balance • Measuring Temperature ( Celsius or Kelvin) • Thermometer • Measuring time ( seconds(s), min (m)): • stopwatch

  7. Safety Tools: • Goggles • Lab coats • Gloves • tongs • Tweezers • Analyzing Tools: • Pencil/pens • Log book • Computers • Calculator • Camera

  8. Other Tools: • Eye droppers • Microscope • Magnifying glass • Hot plates • Trays • Scalpels • Glass stirrer • Mortar and pestle • Binoculars • compass

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