metric and measurements unit 1: science process skills physical science steinbrink
TRANSCRIPT
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Metric and Measurements
Unit 1: Science Process Skills
Physical Science
Steinbrink
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English System
Measurement system practiced in the United States.
The U.S. is the only industrialized, developed nation to not use Metric
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Interesting Facts
The U.S. failed to adopt the metric system as its unit of measurement by one vote in the Continental Congress in the 1770s
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Mars Climate Probe
In 1999 NASA scientists and Lockhead scientists assumed each were using the respective units and the probe was lost at a cost of $125 million
One team was working in English measurements while the other was working in metric.
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Making the Switch to Metric…
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Metric System
The metric system deals with the following units:
Length = Meter
Mass = Gram
Volume = Liter
Most commonly practiced system in the world—95% of the world uses metric
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Le Systeme Internationale
Le Systeme Internationale was adopted in 1960.
Based on the metric system, SI is a comprehensive system of units
SI system uses prefixes to make the metric system units more practical
Used by scientists
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SI versus Metric
Metric only deals with the base unit of measurement where as SI adds prefixes to the base units to adjust the size.
Example: metric--grams SI -- centigrams,
milligrams
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Metric Prefixes
Kilo….Hecto…Deka…base…deci…centi…milli
King
Henry
Died
by
drinking
chocolate
milk
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The End