Learning Goals 9/13/10 1.Name the 3 common measurement systems used in the US 2.List at least 3 reasons to learn about measurement systems 3.Explain how the English system is different from metric or SI (related to the relationships between units of measure) 4.Identify the seven SI base units 5.Identify the facts (“Metric No. Line “ : metric prefixes and their meaning) necessary to master the use of the metric system 6.Convert between metric or SI units

In the US, we use several different systems for measurement depending upon it’s purpose _____________ within a culture related to goods, services, and needs for people Allows for Protection of the ____________ Allows for Protection of Public __________ & __________

3 systems in use throughout the United States ____________- the traditional system used throughout the United States ____________- a system that bases each measurement unit as some factor of 10 using base units with prefixes ______________- a series of measurement units that have been adopted ______________ so that all nations have standardized units for comparison

English System The traditional system used in the U.S. Pro - most US citizens are more familiar with this system for measurement Con - unit relationships are not highly ____________ as in metric system -very few __________ use this system for measurement

Metric System Uses base units and prefixes 3 common metric base units: Mass- gram (g) Volume – Liter (L) Length – meter (m) A ___________ in front of any _________ unit changes the meaning of the unit to make it __________ or _________

SI System A series of internationally adopted measurement units The standard units fir comparison that have been adopted by this system are usually called SI __________ units There are ___common ones adopted internationally

Common Metric Facts “The Metric Prefix No. Line” ,250 mg = ____ kg0.075 cm = _____nm 475 μL = ____L0.64 pg = ____mg Base unit pico- nano- micro- milli- centi- deci- Kilo- Mega- Giga- Tera-