a yardis the basis for the metric system We can increase or decrease the value of a base unit by using a prefix 10 m k This is now the same as 10000 m SI Units are easier to remember than English units because they are based on multiples of ID: 786678
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Slide1
METRIC SYSTEM
The meter—a little longer than
a yard—is the basis for the metric system
Slide2We can increase
or decrease the value of a base unit by using a prefix
10 m
k
(This is now the same as 10,000 m)
SI Units are easier to remember than English units because they are based on multiples of
10
–
Powers of 10 Short Film (1977)
Slide3Si units are easy because they are based on multiples of 10
Prefix Symbol Meaning
Common SI Prefixes
M
G
c
d
k
giga
-
mega-
kilo-
deci
-
milli-
centi-
m
1,000,000,000 or 10
9
1,000,000 or 10
6
1000 or 10
3
0.1 or 10
-1
0.01 or 10
-2
0.001 or 10
-3
NOTES
Slide4Si units are easy because they are based on multiples of 10
Prefix Symbol Meaning
Common SI Prefixes
n
p
micro-
nano
-
pico
-
0.000001 or 10
-6
0.000000001 or 10
-9
0.000000000001 or 10
-12
NOTES
Slide5Slide6Write a summaryWhat is the Metric System?
Why is this system easier to use in science than other systems (for ex. Like the English system which uses inches, feet, etc.)?
Slide7Use The stairCase Method for
converting metric units
What if you have meters but need to convert to km? Or cm? How would you do that?
Slide8kilo-
centi-
deci
-
base
milli-
If you go down the stairway then move the decimal to the right!
If you go up the stairway then move the decimal to the left!
NOTES
deca
-
hecto
-
Slide9Your Turn!Fill in the ladder with the remaining prefixes.
Giga *Bonus to add: Mega Deca: 10Micro Hecto: 100
NanoPicoThis means you may need to add more steps at the top or bottomRemember each step represents 1 power of 10 (or an additional zero either to the left or right depending on which direction)
Slide10Giga-
Mega-k
ilo-deci-centi
-
milli
-
n
base
If you go down the stairway then move the decimal to the right!
If you go up the stairway then move the decimal to the left!
hecto
-
deca
-
Slide11What are the following conversions?
102.2 mm = ___ m
0.594 Mg = ____ g 35956.12ng = ____g
0.1022 m
594000g
0.00003595612g
Slide12PracticeLet’s work on the Metric Mania Worksheet.
We are going to sort the class into 2 groups:Awesome A’s Brilliant B’sIf your group is called, stand up.