Transcript What do all of these have in common?

What do all of these have in
common?
They are all measurement units
Create a word document that
includes:
• Unit of measure
• Identify the type of measure (length, volume,
mass)
• What it was used to measure
• Equivalent measures (what does it equal—what
is the relative size)
• Historical facts of the unit
• Helpful site:
http://www.unc.edu/~rowlett/units/
Science uses a standard system of
measurement. What is it called?
• International
System of Units
Or
• SI (Systeme
International)
What are the basic SI units for:
• Length
meter
• Mass
• gram
• Volume
• liter
• Temperature
• Kelvin
• Celsius is
Used often too
How are SI base units made bigger
or smaller?
• by adding prefixes
• Example:
1meter = ? centimeters
100
1 centimeter = ? Millimeters
10
THE METRIC SYSTEM PREFIXES
PREFIX
SYMBO
L
bigger
units
↑
WORD
TO UNIT
MEANING
Giga-
G
10 9
One Billion Units in a Giga-
Mega
-
M
10 6
One Million Units in a Mega-
kilo-
k
10 3
One Thousand Units in a kilo-
hecto-
h
10 2
One Hundred Units in a hecto-
deka-
da
10 1
Ten Unitsin a deka-
unit
↓
SIZE
COMPARED
mLg
s
1x10 0
deci-
d
1x10-1
One Tenth of a Unit in a deci-
centi-
c
1x10-2
One One Hundredth of a Unit in a centi-
milli-
m
1x10-3
One One Thousandth of a Unit in a milli-
micro-
μ (mu)
1x10-6
One One Millionth of a Unit in a micro-
nano-
n
1x10-9
One One Billionth of a Unit in a nano-
pico-
p
1x10-12
One One Hundred Billionth of a Unit in a
smaller units
pico-
Understanding Magnitude
• http://www.wordwizz.com/imagendx.htm