Title: Metric System

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Title Metric System

• Objective I will be able to convert from one
  metric unit to another.
• Question What is the metric system and how do I
  use it?
• Notes

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History (no notes)

• Built by the French
• Systeme Internationale dUnites (SI)
• Based on powers of 10
• Adopted by science community and all other
  countries

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Base Units (Notes)

• Meter (m)
• Liter (L)
• Gram (g)
• Kelvin (K) or Celsius (oC)
• Second (s)

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Metric System Prefix Table Metric System Prefix Table Metric System Prefix Table Metric System Prefix Table
Prefix Symbol Multiplication Factor Power of 10
yotta Y 1,000,000,000,000,000,000,000,000 24
zetta Z 1,000,000,000,000,000,000,000 21
exa E 1,000,000,000,000,000,000 18
peta P 1,000,000,000,000,000 15
tera T 1,000,000,000,000 12
giga G 1,000,000,000 9
mega M 1,000,000 6
kilo k 1,000 3
hecto h 100 2
deka da 10 1
deci d 0.1 -1
centi c 0.01 -2
milli m 0.001 -3
micro µ 0.000,001 -6
nano n 0.000,000,001 -9
pico p 0.000,000,000,001 -12
femto f 0,000,000,000,000,001 -15
atto a 0,000,000,000,000,000,001 -18
zepto z 0,000,000,000,000,000,000,001 -21
yocto y 0,000,000,000,000,000,000,000,001 -24
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SI Prefixes
Prefix Unit Abbre. Exponent Expanded Example
Mega M 106 1,000,000 Mm megameter
Kilo k 103 1,000 km kilometer
Hecto h 102 100 hg hectogram
Deka da 101 10 daL dekaliter
Base Unit - 100 1 gram, liter, meter, etc..
Deci d 10-1 .1 (1/10) dL deciliter
Centi c 10-2 .01 (1/100) cm centimeter
Mill m 10-3 .001 (1/1000) mg milligram
Micro ? 10-6 .000001 (1/1,000,000) ?L microliter
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Practice Conversion 1Dimensional Analysis Method

• Convert 5,876 meters into Mm (megameters)

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Practice Conversion 2

• Convert 489 mg into grams

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Practice Conversion 3

• Convert 386 cg into dag (dekagrams)

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If you think about it

• If you are converting from smaller unit to a
  bigger unit, does the actual number get bigger or
  smaller? Vice Versa?
• mm to Mm
• Mm to mm
• What is the relationship between exponential
  number AND the amount of places the decimal moves?

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Shortcut

• -This method is quick and easy, however like most
  shortcuts it is easier to make mistakes.
• Move the decimal the number of places that
  matches the exponent number you are converting
  to.
• If you are moving up then move decimal to the
  left.
• If you are moving down then move the decimal
• to the right.

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Volume Conversions

• Volume of a Solid or Gas by Meters
• (L x W x H) ____ m3, cm3, etc
• 3 m x 3 m x 3 m 27 m3
• Volume of a Liquid is in Liters
• 1 cm3 (cc) 1 mL
• 20 cc 20 mL

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Temperature Conversions

• Celsius to Fahrenheit
• (oC x 9/5) 32 oF
• Fahrenheit to Celsius
• (oF 32) x 5/9 oC
• Kelvin to Celsius
• t(oC) T(K) 273.15 K
• Celsius to Kelvin
• T(K) t(oC) 273.15oC

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Temperature Scales

• Degrees Fahrenheit
• 32oF to 212oF
• Degrees Celsius
• 0oC to 100oC
• Kelvin
• 273K to 373 K)
• 0K is absolute zero
• Coldest temp possible
• All molecular movement stops
• Never been achieved, but close

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Practice Temperature Conversions

• 85oF _______ oC
• 28oC ________K

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What You Need to Work On

• Memorize abbreviations, prefixes, and their
  matching numbers (10-6 to 106)
• Homework Assignment
• Pg 19 8
• Pg 36 12-16
• Pg 37 3
• Bring Book TOMORROW and Calculator!
• Next Quiz is Wed. Sept 17th