Metric System

What is Measurement? Uses numbers to describe objects and events. Metrology-is the study of measurement Why do we need a standardized method of measurement?

Common System of Measurement Metric System Base 10 system created by Gabriel Mouton in 1670. 1790 France pushed for common measurement Most Countries in the World use only this system Customary System Primarily used by the US. Inches, ounces, miles, etc.

SI units International system of units SI-comes from French Systeme International d’unites. Seven Basic Units. Meter Second Kelvin Kilogram Mole Ampere Candela

# of Base unit to make the other prefixes Abbreviation # of Base unit to make the other prefixes Example Kilo k 1,000 Kilometer – km Hecto h 100 Hectometer – hm Deka da 10 Dekameter – dam Base Unit – meter, gram, liter, second b m, g, l, s 1 Meter – m; Gram – g; Liter – l; Second – s Deci d 0.1 Decimeter – dm Centi c 0.01 Centimeter – cm Milli m 0.001 Millimeter – mm

Metric Ladder

Length The basic unit for length is the meter Use rulers and meter sticks to measure length 1 meter = 3.28 feet

Mass The basic unit for mass is the Kilogram Use a balance or scale to find mass

Temperature The basic unit for temperature is either Celsius or Kelvin Use a thermometer

Volume The basic unit for volume is Liter Use graduated cylinders to measure liquid volume Length x width x height is also used to find volume

Time The basic unit of time is seconds

Converting Metric to Metric If you are going from a smaller unit to a larger unit, you divide, or move your decimal point to the left.

Converting Metric to Metric If you are going from a larger unit to a smaller unit, you multiply, or move your decimal point to the right.