9/8/2009
Review of Measurements
• The Universal System of measurements is
called the SI System
• Based on multiples of 10
Metric Conversions
Ladder &
Cancelation
Methods
• Common abbreviations:
• Milli – 1/1000ths
• Centi – 1/100ths
• Kilo - 1000
T. Trimpe 2008 http://sciencespot.net/
Review of Measurements
• What can be measured?
– Length – distance between 2 points
– Temperature – the hotness or coldness of
an object
– Volume – the amount of space occupied by
an object
– Mass – how much an object weighs
– Time – how long it takes for an event to
happen
Review of Measurements
Measurements
Units
Length
Centimeters
Symbols
Equipment
Review of Measurements
Measurements
Units
Symbols
Equipment
Length
Mass
Volume
Temperature
Time
Review of Measurements
Measurements
Units
Symbols
Length
Centimeters
cm
Mass
Mass
Volume
Volume
Temperature
Temperature
Time
Time
Equipment
1
9/8/2009
Review of Measurements
Review of Measurements
Measurements
Units
Symbols
Equipment
Measurements
Units
Symbols
Equipment
Length
Centimeters
cm
Ruler
Length
Centimeters
cm
Ruler
Mass
Mass
Grams
Volume
Volume
Temperature
Temperature
Time
Time
Review of Measurements
Review of Measurements
Measurements
Units
Symbols
Equipment
Measurements
Units
Symbols
Equipment
Length
Centimeters
cm
Ruler
Length
Centimeters
cm
Ruler
Mass
Grams
g
Mass
Grams
g
Balance/Scale
Volume
Volume
Temperature
Temperature
Time
Time
Review of Measurements
Review of Measurements
Measurements
Units
Symbols
Equipment
Measurements
Units
Symbols
Equipment
Length
Centimeters
cm
Ruler
Length
Centimeters
cm
Ruler
Mass
Grams
g
Balance/Scale
Mass
Grams
g
Balance/Scale
Volume
Milliliters
Volume
Milliliters
mL
Temperature
Temperature
Time
Time
2
9/8/2009
Review of Measurements
Review of Measurements
Measurements
Units
Symbols
Equipment
Measurements
Units
Symbols
Equipment
Length
Centimeters
cm
Ruler
Length
Centimeters
cm
Ruler
Mass
Grams
g
Balance/Scale
Mass
Grams
g
Balance/Scale
Volume
Milliliters
mL
Graduated
Cylinder
Volume
Milliliters
mL
Graduated
Cylinder
Temperature
Temperature
Degrees Celsius
Time
Time
Review of Measurements
Review of Measurements
Measurements
Units
Symbols
Equipment
Measurements
Units
Symbols
Equipment
Length
Centimeters
cm
Ruler
Length
Centimeters
cm
Ruler
Mass
Grams
g
Balance/Scale
Mass
Grams
g
Balance/Scale
Volume
Milliliters
mL
Graduated
Cylinder
Volume
Milliliters
mL
Graduated
Cylinder
Temperature
Degrees Celsius
oC
Temperature
Degrees Celsius
oC
Thermometer
Time
Time
Review of Measurements
Review of Measurements
Measurements
Units
Symbols
Equipment
Measurements
Units
Symbols
Equipment
Length
Centimeters
cm
Ruler
Length
Centimeters
cm
Ruler
Mass
Grams
g
Balance/Scale
Mass
Grams
g
Balance/Scale
mL
Graduated
Cylinder
Volume
Milliliters
mL
Graduated
Cylinder
Thermometer
Temperature
Degrees Celsius
Time
Seconds
Volume
Milliliters
Temperature
Degrees Celsius
Time
Seconds
Thermometer
s
3
9/8/2009
Review of Measurements
Measurements
Units
Symbols
Equipment
Length
Centimeters
cm
Ruler
Mass
Grams
g
Balance/Scale
Volume
Milliliters
mL
Graduated
Cylinder
Temperature
Degrees Celsius
Time
Seconds
0.001 =
0.01
=
0.1
= 1
= 10
= 100
= 1000 = 1,000000 = 1000000000
kilometer
hectometer
dekameter meter decimeter centimeter millimeter micrometer
nanometer
(km)
(hm)
(dkm)
(m)
(dm)
(cm)
(mm)
(um)
(nm)
____________________________________________________________________________________________
0.001 =
0.01
=
0.1
= 1
= 10
= 100
= 1000 = 1,000000 = 1000000000
kilogram
hectogram
dekagram
gram
decigram centigram
milligram
microgram
nanogram
(kg)
(hg)
(dkg)
(g)
(dg)
(cg)
(mg)
(ug)
(ng)
____________________________________________________________________________________________
0.001 =
0.01
=
0.1
= 1
= 10
= 100
= 1000 = 1,000000 = 1000000000
kiloliter
hectoliter
dekaliter
liter
deciliter centiliter
milliliter
microliter
nanoliter
(kL)
(hL)
(dkL)
(L)
(dL)
(cL)
(mL)
(uL)
(nL)
____________________________________________________________________________________________
Basic
Unit
Thermometer
s
Stop Watch
Ladder Method
1
Conversion Practice
2
KILO
1000
Units
3
HECTO
100
Units
DEKA
10
Units
DECI
0.1
Unit
Meters
Liters
Grams
How do you use the “ladder” method?
1st – Determine your starting point.
2nd – Count the “jumps” to your ending point.
3rd – Move the decimal the same number of
jumps in the same direction.
CENTI
0.01
Unit
MILLI
0.001
Unit
4 km = _________ m
Starting Point
4. __. __. __. = 4000 m
2
1000 mg = _______ g
1 L = _______ mL
160 cm = _______ mm
14 km = _______ m
109 g = _______ kg
250 m = _______ km
Ending Point
How many jumps does it take?
1
Try these conversions using the ladder method.
Compare using <, >, or =.
56 cm
6m
7g
698 mg
3
Cancelation Method
Metric Conversion Challenge
Write the correct abbreviation for each metric unit.
How do you use the “cancelation” method?
2 km = _________ m
1st – Determine starting point & ending point.
Starting PointEnding Point
2nd – Determine conversion factor
3rd – Multiply the starting point by conversion
factor making sure that same units are opposite
each other
Conversion Factor: 1 km = 1000 m
2 km X 1000 m = 2000 m
1 km
1) Kilogram _____
4) Milliliter _____
7) Kilometer _____
2) Meter _____
5) Millimeter _____
8) Centimeter _____
3) Gram _____
6) Liter _____
9) Milligram _____
Try these conversions, using the ladder method.
10) 2000 mg = _______ g
15) 5 L = _______ mL
20) 16 cm = _______ mm
11) 104 km = _______ m
16) 198 g = _______ kg
21) 2500 m = _______ km
12) 480 cm = _____ m
17) 75 mL = _____ L
22) 65 g = _____ mg
13) 5.6 kg = _____ g
18) 50 cm = _____ m
23) 6.3 cm = _____ mm
14) 8 mm = _____ cm
19) 5.6 m = _____ cm
24) 120 mg = _____ g
4
9/8/2009
Compare using <, >, or =.
25) 63 cm
26) 536 cm
6m
53.6 dm
27) 5 g
28) 43 mg
508 mg
5g
29) 1,500 mL
30) 3.6 m
1.5 L
36 cm
5