Metric Review
International System of Units (SI)
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Base of 10
1 meter = 100 centimeters=1000 millimeters
Standard Units:
-Mass = gram (g)
-Length = meter (m)
-Volume = liter (l) or cubic centimeter (cm3)
All measurements have a number and a unit
Area
• The amount of surface within
given boundaries
• A = length x width
A=LxW
• Units = square centimeters (cm2)
Volume of Regular Solid Objects
• The amount of space an object
“takes up”
• V = length x width x height
• V=LxWxH
• Units = cm3 (cubic centimeters)
Volume of Irregular Solid Objects
• Use the water displacement
method in a graduated cylinder
• V = Final measurement – Initial
measurement
Volume of Liquid
• Measured in a graduated cylinder
• Units = liters (L)
• 1 ml = 1 cm3
Mass
• The measure of the amount of matter in an
object
- Measured with a balance scale
- Weight = the measure of the force of gravity
on a mass
- Measured with a spring scale
• Mass is not equal to weight
Density
• The amount of matter in a given volume
• D = Mass
volume
• Units = g/cm3
D = m/v
VD = m
Temperature
• Measured with thermometer
• SI unit for temperature = Celsius (C)
- Celsius scale is based on the freezing and
boiling points of water
-Freezing = 0 degrees C
-Boiling = 100 degrees C
• SI unit for extreme temperature = Kelvin
Temperature Conversions
• Fahrenheit to Celsius
F = C (9/5) + 32
• Celsius to Fahrenheit
C = (F-32) (5/9)
• Celsius to Kelvin
K=C-273.15
• Kelvin to Celsius
C = K+ 273.15
Converting SI Base Units
k
K = kilo
H= hecto
d= deca
h
d
m
l
g
d
c
m= meters
l= liters
g= grams
m
d= deci
c= centi
m= milli