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:

History (no notes)

Built by the French Systeme Internationale d’Unites (SI) Based on powers of 10 Adopted by science community and all other

countries

Base Units (Notes)

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

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

SI PrefixesPrefix 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

Practice Conversion 1Dimensional Analysis Method

Convert 5,876 meters into Mm (megameters):

Practice Conversion 2

Convert 489 mg into grams:

Practice Conversion 3

Convert 386 cg into dag (dekagrams):

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?

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.

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

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

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

Practice Temperature Conversions

85oF = _______ oC 28oC = ________K

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