Standards Of Measurement

Standards of Measurement The International System of Units (SI)

Units and Standards ,[object Object],[object Object]

Measurement Systems Suppose the length of a string in a ball of yarn is 100. Can you tell how much string is in the ball? NO!! ,[object Object],[object Object]

International System of Units ,[object Object],[object Object],[object Object],[object Object]

Common SI Prefixes Prefix Symbol Multiplying Factor Kilo- k 1000 Deci- d 0.1 Centi- c 0.01 Milli- m 0.001 Micro- m 0.000001 Nano- n 0.000000001

Using SI Units ,[object Object]

SI Base Units Quantity Measured Unit Symbol Length Meter m Mass Kilogram kg Time Second s Electric current Ampere A Temperature Kelvin K Amount of substance Mole mol Intensity of light Candela cd

Length ,[object Object],[object Object],[object Object],[object Object],[object Object]

Choosing a Unit ,[object Object],1 meter 1 centimeter 10 football fields= 1 kilometer

Volume ,[object Object],[object Object],[object Object],[object Object],3 cm 3 cm 3cm 3

Mass ,[object Object],[object Object],[object Object],Which ball has more mass? How many grams are in one kilogram?

Density ,[object Object],[object Object],[object Object]

Time and Temperature ,[object Object],[object Object],[object Object],That is -273 degrees Celsius, which is 273 degrees below freezing!!

Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Standards Of Measurement

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