Metrics

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Metrics
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Why is it necessary to use metric units?
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• 1. How tall is a 6 foot man?
• a. 1 league b. 1 fathom c. 1 rod
  d. 1 furlong
•  2. How much milk is in a gallon jug?
• a. 4 pints b. 2 quarts c. 5
  pecks d. 32 gills
•  
• 3. How much does a quarter pounder weigh before
  cooking?
• a. 1750 grains b. 128 drams c. 8 ounces
  d. 1 hundredweight
• 4. How much does your average 2 1/2gram penny
  weigh?
• a. 1 pennyweight b. 39 grains c. 20
  scruples d. 47 apothecaries' dram
•  
• 5. At what temperature does water freeze?
• a. 0o Fahrenheit b. 492o Rankine c. 32o
  Centigrade d. 100o Kelvin

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• 1. How tall is a 6 foot man?
• a. 1 league b. 1 fathom c. 1 rod
  d. 1 furlong
• 15840 feet 6 feet 16.5 feet 5282 feet
•  
• 2. How much milk is in a gallon jug?
• a. 4 pints b. 2 quarts c. 5 pecks
  d. 32 gills
• 1/4 gallon 1/2 gallon 2 gallons 1 gallon
•  
• 3. How much does a quarter pounder weigh before
  cooking?
• a. 1750 grains b. 128 drams c. 8
  ounces d. 1 hundredweight
• 1/4 lb 1/2 lb 1/2 lb 100lbs
•  
• 4. How much does your average 2 1/2gram penny
  weigh?
• a. 1 pennyweight b. 39 grains c. 20
  scruples d. 47 apothecaries' dram
• 12 grams 2.5 grams 15 grams 1.5 grams
•  
• 5. At what temperature does water freeze?
• a. 0o Fahrenheit b. 492o Rankine c.
  32o Centigrade d. 100o Kelvin
• -18oC 0o C 32o C 173oC

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• Did you score 100 If you did not, don't feel
  badly. There were a lot of measurements in those
  questions that you might not be familiar with
  because they are different types of measurements
  that are used all over the world.

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• Sometimes, even the same measurement means
  different things, take for example the
  measurement "ton".
• 1 U.S. short ton 2,000 pounds
• 1 U.S. long ton 2,240 pounds
• 1 nautical ton 100 cubic feet
• 1 freight ton 40 cubic feet
• 1 metric ton 1,000 kilograms or 2,205 pounds
• 1 displacement ton 35 cubic feet.

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• I'm sure you can imagine how confusing it could
  be, for scientists all over the world to measure
  things if they had to convert them all the time
  from different measurement scales. So, in 1960
  S.I. units (from the French Systeme
  Internationale, or the International System) was
  adopted by the General Conference on Weights and
  Measures -- the sixth such conference since 1840.
  
• The International System was a modern form of the
  metric system. This following is a basic summary
  of measurements under the metric system

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Whats being measured Length Mass Volume Temper-ature
Units Meter (m) Grams (g) Liter (l) Degrees Celsius (oC)
Instru-ment Meter stick Scale (balance) Graduated cylinder Thermo-meter
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• Due to ad-hesion, water sticks to things unlike
  it. So often, water will cling to the sides of a
  glass graduated cylinder. When reading a
  graduated cylinder, read at the bottom of the
  meniscus.

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Determine the following volumes

• 1. 2.
• 3. 4.

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Convert the following temperatures

• 0oC ___ oF 0oF ___ oC
• 32oC ___ oF 98.6oF ___ oC
• 212oC ___ oF 212oF ___ oC
• -30oC ___ oF -12oF ___ oC

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Metrics use base 10
G i ga Mega Kilo Hecta Deca 1 Meter Liter Gram deci centi milli micro nano
1x109 1x106 1000 1X103 100 1X102 10 1 1/10 0.1 1/100 0.01 1X10-2 1/1000 0.001 1X10-3 1x10-6 1x10-9
Scientific Notation (100 1) 100 1 X
102 1000000 1 X 106 1000000000 1 X 109 0.01
1 X 10-2  0.000001 1 X 10-6 0.000000001 1 X
10-9
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Practice converting the following

• 1) 23.5 M _____cm. _____Gm
• 2) 134.56 mm. _____ M _____ nm
• 3) 98.43 L ____ ml. _____ um
• 4) 345.34 Km ____ dm. _____ Mm
• 5) 34 g. ____ Kg. _____ um
• 6) 123.43 cg. _____Hg. _____ ug
• 7) 32.5 L. _____ml. _____ Gl
• 8) 456.3 g. _____ cg. _____ Mg
• 9) 3908.3 Kl. ____ ml. _____ L
• 10) 0.0045 Dg. ____ cg. _____ dg

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For More Practice

• http//faculty.clintoncc.suny.edu/faculty/Michael.
  Gregory/files/Bio20101/Bio2010120Laboratory/Met
  ric20System/Metric_System.htm
• Science Lab Equipment http//staff.tuhsd.k12.az.u
  s/jerwilliams/Science20Lab20Equipment.htm