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The%20Metric%20System

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The Metric System U.S.Metric Association Formed in 1916 to ... Length meter Mass gram Volume liter ... PowerPoint Presentation Metric Mania ... – PowerPoint PPT presentation

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Title: The%20Metric%20System


1
The Metric System
2
U.S.Metric Association
  • Formed in 1916 to work to get the United States
    to go metric

3
Why go Metric?
4
What is a bushel?
http//www.unc.edu/rowlett/units/scales/bushels.h
tml
5
Hand
  • a traditional unit of distance, now used mostly
    to measure the height of horses. One hand equals
    4 inches, 1/3 foot, or 10.16 centimeters.
  • Height 162 Hands

6
Metric Standards
  • Physical standards for units of measurement exist
    throughout the world.
  • Locked away in special climate controlled,
    heavily guarded vaults, they represent a
    world-wide reference for our measurement system.
  • Why is it important to have reference standards?

7
  • This kilogram/liter, made in 1905, was a hollow
    gold-plated brass sphere having a mass of
    approximately 1 kg and a volume of approximately
    1 cubic decimeter (1 liter).

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14
  • Metric Measurements in Biology will use
  • Length
  • meter
  • Mass
  • gram
  • Volume
  • liter
  • Temperature
  • Celcius

15
Temperature
  • Celcius
  • Water freezes at
  • 0 celcius
  • Water boils at
  • 100 celcius

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19
Prefixes
  • Kilo 1000 103
  • Hecta 100 102
  • Deka 10 101
  • Base unit 1 100
  • Deci 0.1 10-1
  • Centi 0.01 10-2
  • Milli 0.001 10-3
  • Micro 0.000001 10-6

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22
Metric Mania Ladder
  • http//sciencespot.net/Media/metric_metconv.ppt
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