Measuring in International system (SI)

LEngth English vs metric Which is longer? 1 mile or 1 kilometer 1.6 kilometers 1 mile English vs metric 1 inch = 2.54 centimeters Which is longer? 1 mile or 1 kilometer 1 yard or 1 meter 1 inch or 1 centimeter 1 yard = 0.9444 meters

LEngth km mm cm m Basic unit of length: meter (m) Distance from one end of an object to the other end or from one point to another Basic unit of length: meter (m)

Mass Which is larger? 1 Pound or 100 Grams 1 Kilogram or 1 Pound 1 Ounce or 1000 Milligrams 1 pound = 453.6 grams 100 kilogram = 220 pounds 1 ounce of gold = 28,349.5 milligrams

How much MATTER an object has Mass kg g cg mg How much MATTER an object has Basic unit of mass: gram (g)

Volume Which is larger? 1 liter or 1 gallon 1 liter or 1 quart 1 milliliter or 1 fluid ounce 1 fl oz = 29.573 ml 1 12-oz can of soda would equal approximately 355 ml. 1 quart = 0.946 liters 1 gallon = 3.79 liters It would take approximately 3 ¾ 1-liter bottles to equal a gallon.

How much SPACE an object takes up Volume kL L cL mL How much SPACE an object takes up Basic unit of mass: Liter (L)

Volume **1 cm3 = 1 mL** V= l x w x h V= 36cm3 Volume of cubes & rectangular prisms: V= 36cm3 cm cm cm **1 cm3 = 1 mL**

Volume Volume of irregularly shaped objects: hint: it involves water Water Displacement Method: -the difference in water levels from water by itself and water with object is the volume of object meniscus

So why S.I.? Used by scientists world wide Much easier to convert -- based on units of 10 Give examples of why base unit of 10 is simpler (4.1x10 = 41; 4.1x100 =410; 4.1/10 = 0.41 etc)

Prefixes Kilo 1000 Hecto 100 Deka 10 Deci 1/10 or 0.1 Centi 1/100 or 0.01 Milli 1/1000 or 0.001

Also works with liters (L) SO how does that help? 1000m = 1 kilometer (km) 100m = 1 hectometer (hm) 0.01m = 1 centimeter (cm) 1000g = 1 kilogram (kg) 100g = 1 hectogram (hg) 0.01g = 1 centigram (cg) Or… 1m = 100cm Or… 1g = 100cg Also works with liters (L)

Easy Conversions… 1 2 3 KILO 1000 Units HECTO 100 Units DEKA 10 Units DECI 0.1 Unit Meters Liters Grams CENTI 0.01 Unit MILLI 0.001 Unit

Bigger numbers… ____quarters = ___dollar ____km =____m ____hg = ____mg ____cL = ____mL

Practice < > = > = < Compare using <, >, or =. 63 cm 6 m 5 g 508 mg 1,500 mL 1.5 L 536 cm 53.6 dm 43 mg 5 g 3.6 m 36 cm < > = > = <