1. International System of Units SI Units A.K.A. The Metric System

2. Basics Based upon factors of 10 Base Units: –Length = Meter = Distance from point A to B –Mass = Grams = How much matter is in an object –Volume = Liter = Amount of space within something United States uses the English System

3. Basics Cont’d Most of the world uses the Metric System Can be found in the U.S., but where? –Examples: Why is there confusion about the metric System? Hint: think about purchasing Milk vs. Soda

4. Tools For Metric Measuring Tools to measure Mass: Triple Beam Balance Spring Scale Digital Balance

5. Tools For Metric Measuring (cont’d) Tools for measuring Volume: Metric RulerGraduated Cylinder We read the meniscus

6. Tools For Metric Measuring (cont’d) Tools for measuring length: Metric RulerMeter Stick

7. Metric System Symbols K = Kilo h = hecto da = deca d = deci c = centi m = milli

8. Larger Numbers Smaller Numbers HectoKiloDecaBase Units DeciCenti Milli Base Units

9. Metric System Summarized Base Units KiloHectoDecaDeciCentiMilli 100010010.1.01.001 10x 10 3 10 x 10 2 10 x 10 1 10 x 10 -1 10 x 10 -2 10 x 10 -3 KingHenryDrank Bro wn DeliciousChocolateMilk

10. Example 950 g = ___________ kg 950.0 g Identify the location for the decimal based upon the example 950.0 g KHDB. DCM 950.0 g K. HDB. DCM Move the decimal to the correct location based upon the problem. 950 g = ___.950__ kg

11. You try: 1) 86,000l= _____________________ kl 2).98765kg= ____________________g 3) 76.8345mg= _________________ _cg 4) 546.9821mm= _________________km