Metric System

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    Metric System - Presentation Transcript

    1. The Metric System
    2. What is it?
      • Metric system : standard system of measurement used by all scientists.
      • Scientists use metric units to measure:
      • length
      • volume
      • mass
      • weight
      • density
      • temperature
      • The method of converting measurement in one unit to measurements in another unit is known as dimensional analysis .
      • Conversion factor : a fraction that always equals 1.
    3. thermometer Celsius temperature D=M/V density Weighing scale Newton weight Triple-beam balance Gram, kilogram, milligram mass Graduated cylinder, beaker Liter, mL, cubic centimeter volume Ruler, meter stick, yard stick meter, cm, km, light year length Tool Unit Measurement
    4. Length
      • The basic unit of length is the meter .
        • Meter (m)- your height would be measured in meters.
        • Centimeter (cm): one-hundredth of a meter (to measure your textbook).
        • Millimeter (mm): one-thousandth of a meter (to measure the diameter of the pupil of your eye).
        • Micrometer: 1,000,000= 1 meter
        • Kilometer (km): one thousand meters (to measure length of a long river).
        • Light year: distance that light travels
    5. Volume
      • Volume is the amount of space an object takes up.
        • Liter (L): basic unit of volume
        • Milliliter (mL): = to 1/1000 of a liter (to measure liquid in a cup).
        • Cubic centimeter (cc): = to 1 milliliter (used to measure solids…..length X width X height).
    6. Mass
      • Mass is a measure of the amount of matter in an object.
        • Kilogram (kg): the basic unit of mass (to measure large objects/animals).
        • Gram (g): 1/1000 of kilogram (to measure mass of a coin).
        • Milligram (mg): one-thousandth of a gram.
    7. Weight
      • Weight is a measure of the attraction between two objects due to gravity.
        • Newton (N): the basic unit of weight (your weight in outer space).
    8. Density
      • The relationship between mass & volume.
      • D=M/V
      • Suppose a substance has a mass of 10 grams and a volume of 10 milliliters. What is the density of the substance?
    9. Temperature
      • Temperature is measured on the Celsius scale only.
      • To convert Celsius ( C°) to Fahrenheit (F °):
              • Multiply by 9
              • Divide by 5
              • Add 32
      • To convert Fahrenheit (F °) to Celsius (C°):
              • Subtract 32
              • Multiply by 5
              • Divide by 9

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