Metric and Measurements Unit 1: Science Process Skills Physical Science Steinbrink

English System  Measurement system practiced in the United States.  The U.S. is the only industrialized, developed nation to not use Metric

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

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.

Making the Switch to Metric…

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

Le Systeme Internationale Le Systeme Internationale was adopted in 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

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

Metric Prefixes Kilo….Hecto…Deka…base…deci…centi…milli King Henry Died by drinking chocolate milk

The End