Metric system

• 1. THE METRIC SYSTEM!!The universal language of science

2. What is the differencebetween metric and standard(English) System of measure? The English system uses a base 12 tomake conversions and gets verycomplicated The Metric system uses a base 10 (justlike the fingers on your hand) to makeconversions and is VERY easy 3. Dont most countries use theEnglish system? Noin fact, beside the United Sates,the only other country that uses theEnglish system is.(Take a guess) 4. You Guessed it.. Myanmar , officially the Union ofMyanmar is the largest country ingeographical area in mainlandSoutheast Asia . Also known as Burmaor the Union of Burma 5. Why does the United Statesstill use the English system? Convenience? Maybe we just dont want tochange because we would have to learnsome new stuff Cost? It would cost a lot of money: Thinkabout roadsigns, containers, cars, foods, etcProbably a little of bothbut in this class, theEnglish system of measure does not exist 6. OKHere we go This is a much easier way to docalculations, and make conversions: Try these 2 calculations one in theEnglish system and one in metric Convert 7,899 inches to miles Convert 7,899 centimeters into kilometers 7. First the English measure 7,899 inches/12inches in a foot658.25 feet 658.25 feet/5,280 feet in a mile.12466856060 of a mile All that just to make 2 conversions????NO Thanks! Pain in the BOOTY 8. Now the Metric method 7,899 centimeters to kilometersthats5 conversions!!!! Holy Cow! Ready? Go Move the decimal 5places to the left. Thats it..07899 kilometersIm a cow,and I can doTHAAAAT 9. Start with base units Base units are what we multiply by theprefix to arrive at a new quantity. Itdoesnt matter what it isjust apply theprefix to the base unit. Here are some common base units 10. Mass Grams-How much is a gram? About apenny. How many grams in an ounce?Who careswe dont use English units 11. Volume 2 ways to do thisLiters-usually liquid or gas containersMeters cubed: B X H X W = M3 12. Length Meters: This is about as far apart ( alittle more) as you would hold yourhands for a yard. 13. Temperature Celsius, or Centigrade: How do you covertFarenheit to Celsius? 1st subtract 32 from the Farenheit number Then divide by 9 Then multiply by 5 Isnt that fun???? Really, who cares? 98.6F is roughly equal to 37C 14. Why dont we just use Farenheit?Are you kidding?How do you covert Farenheit toCelsius?1st subtract 32 from the Farenheit numberThen divide by 9Then multiply by 5Isnt that fun????Really, who cares?98.6F is roughly equal to 37C 15. Prefixes Now that we have the base units, weneed to know what to do with them. Inthe metric system, we add a prefix to abase and multiply the numberrepresented by the prefix by one baseunit Here we go 16. Prefix names and numericmeanings Here are some fun ones Yotta- Y 10 241 000 000 000 000 000 000 000 000 Zetta- Z 10 211 000 000 000 000 000 000 000 Exa- E 10 181 000 000 000 000 000 000 Peta- P 10 151 000 000 000 000 000 Tera- T 10 121 000 000 000 000 Giga- G 10 91 000 000 000 Mega- M 10 61 000 000myria- my 10 410 000 (this is now obsolete)This is makingmeDog-gonemad 17. More useful prefixes kilo- k 10 31000 hecto- h 10 2100 deka- D 10110 Unit ? 1001 deci- d 10 -10.1 centi- c 10 -20.01 milli- m 10 -30.001 micro- mu 10 -60.000 001 nano- n 10 -90.000 000 001Im catchingon 18. SighDont these peoplehave something better to dowith their time? pico- p 10 -120.000 000 000 001 femto- f 10 -150.000 000 000 000 001 atto- a 10 -180.000 000 000 000 000 001 zepto- z 10 -210.000 000 000 000 000 000 001 yocto- y 10 -240.000 000 000 000 000 000 000 001 19. The good news You only need to know the prefixes in themiddle k h da u d c m mu n 20. Putting it together Add the prefix to the base: Example how many grams is 25 kG Kilo is 1000 25 is 25 (duh) So this is 25,000 grams Would this number be the same if the base waschocolate chip cookies???????? 21. Conversions Since everything is base 10, all you have todo is move the decimal: Convert 3899 mL to LLook at the khdaUdcm prefix scale and move thedecimal the same direction as the prefixSince we are moving from milli to unit, move thedecimal 3 spaces to the left:3.899 L 22. Practice Convert1) 23 mG to dG2) 45 daL to mL3) 9966 mM to kM 23. Answers1) 23 mG = .23 dG2) 45 daL = 450000 mL3) 9966 mM = .009966 kM 24. Dont tell meTemperature? Fraid so- Fahrenheit is an outdated andpretty useless scale for measuringtemperature. This silly temperaturescale was named afterDaniel Gabriel Fahrenheit (1686 1736) There are conflicting stories as to howhe arrived at this scale, but it is obsoletetoday 25. Celsius In Science and really in the rest of theworld we use the Celsius scale, namedafter Anders Celsius (1701-1744). THISis based on the melting and boilingpoints of water: 0 degrees and 100degreesUnfortunately thesetemperatures can be expressed asnegatives which makes them difficult todo calculations with, sooooo 26. Kelvin Scale The Kelvin scale is more useful inscience because there are no negativetemperatures. This is based on theabsolute zero concept. That is thetemperature at which all molecularmotion stops. This is 273.15 belowzero Celsius. That is cold!!! This aisabout 460 degrees below zeroFarenheit 27. Wa-Hoooooooo! I am a Metric-Maniac!!!!!!