2 Mini- WebQuest When was the Metric System or SI units established? Which scientists helped design the Metric System in use today?Find and list the countries that are NOT using the Metric System?
3 WHY DO WE USE THE METRIC SYSTEM? Almost all other countries are using the metric systemOther countries’ companies are refusing to buy products from the U.S. if not labeled in metric unitsScientists need a universal way to communicate data (SI Units)
4 APPROXIMATE CONVERSIONS BETWEEN METRIC & US LENGTH UNITS A meter is about the same length as a yardA meter is about three feet longA decimeter is about four inches longAn inch is about 25 millimetersA foot contains about 30 centimetersA foot contains about 3 decimeters
5 WHAT DOES THE METRIC SYSTEM MEASURE? In the metric system there are 3 base units:MeterLiterGramThe gram measures massWhat is mass??The liter measures volumeWhat is volume??The meter measures lengthWhat is length??
6 Metric SystemThe base units can stand alone or a prefix can be added to the frontExample:centi + meter = centimeterThe prefixes we will use most in this class are:Kilo-Centi-Milli-
7 Metric System Ladder Kilo- Hecto- Deca- meter gram liter Centi- Milli- Base UnitsmetergramliterDeci-Centi-Milli-
8 THE METRIC CONVERSION CHART (LADDER METHOD) To convert to a smaller unit, move decimal point to the right or multiply.Kilo-Hecto-Deca-Base Units:GramMeterLiterDeci-Centi-Milli-To convert to a larger unit, movedecimal point to the left or divide
9 TRY THIS USING THE LADDER METHOD 1000 mg = ______ gStep 1: Determine if you are going to go up or down the ladder.Step 2: Determine how many steps there are from milligrams to grams.Step 3: Move the decimal point the amount of places that was determined in steps 1 & 2.
10 TRY THIS USING THE LADDER METHOD 1 L = __________ ml50 kg = ____________ g200 m = ____________ km