1. Measurement &
Graphing

2. Standards of Measurement
Standard – exact quantity that people agree to
use for comparison
Metric System – system of measurement based on
multiples of 10
SI – International System of Units used and
accepted worldwide

3. Common SI Prefixes
Prefix Symbol Multiplying Factor
deka- D 10 = 101
hecto- H 100 = 102
kilo- k 1000 = 103
deci- d 0.1 = 10-1
centi- c 0.01 = 10-2
milli- m 0.001 = 10-3
micro- μ 0.000001 = 10-6
nano- n 0.000000001 = 10-9

4. Using SI Units
Quantity Unit Symbol
Measured
Length Meter m
Mass Kilogram kg
Time Second s
Electric Current Ampere A
Temperature Kelvin K
Amount of Mole mol
substance
Intensity of light Candela cd

5. Temperature
 Kelvin  Celsius
 273K = Freezing  0˚C = Freezing
 373K = Boiling  100˚C = Boiling
 Coldest Possible Temp:  ˚C = K – 273
 Absolute 0 = -273˚C
 K=˚C + 273

6. Try these temp. conversions:
 98.6 º C = ? K
 104.38 K = ? º C

7. Conversion Tips
 A measurement consists of two parts:
 a number and
 a unit label
 To convert from larger to smaller units:
 Multiply or
 MOVE DECIMAL TO THE RIGHT
 To convert from smaller to larger units:
 Divide or
 MOVE DECIMAL TO THE LEFT

8. Use this Tool:
Kilo Hecto Deka Meter (m) Deci Centi Milli
(k) (h) (D) Gram (g) (d) (c) (m)
Liter (L)

9. Try these conversions:
 1 km = _____________ m
 1 m = _____________ cm
 25 km = ________ m = _______ cm
 55 kL = _______ cL = ________ L

10. Graphing
 Graph – a visual display of information or data
Uses of Graphs
 Line Graphs – show trends or how data change over
time
 Bar Graphs – compare information collected by
counting
 Circle (Pie) Graphs – show how a fixed quantity is
broken down into parts.