1. Metric System - Revisited

2. Measuring – 3 things we measure
Length
Mass
Volume

3. Two Methods
English
Metric

4. What you are used to. Inches, feet, & miles Length Pounds & English
Ounces
English
Mass
Volume
Quarts, pints,
& gallons

5. What scientists use…and the rest of the world except Liberia and Burma.
meters
Length
Mass
grams
Metric
Volume
liters

6. Now forget the left side of the bubble map… This is what you are to use from now on
Metric System
Length
Mass
Volume
Meters (m)
Grams (g)
Liters (L)

7. These are the Suffixes….
Metric System
Length
Mass
Volume
Meters (m)
Grams (g)
Liters (L)

8. Suffixes (root word) cont…
The word prehistoric – “historic” is the suffix
It always comes after the prefix.
Same with multivitamin – “vitamin” is the suffix

9. Prefixes They come before the suffix.
Prefixes by themselves don’t mean anything.
Example, the prefix “Un” means nothing
Added to unhappy means not happy.

10. Metric Prefixes Kilo (k) – largest Hecto (h) Deca (da) Deci (d)
Centi (c)
Milli (m) – smallest
They will never be by themselves, they have to be written with a suffix.

11. Prefixes + Suffixes for Mass (grams)
Prefix + Suffix = Term
Kilo (k) + gram (g)= Kilogram (kg)
Hecto (h) + gram(g) = Hectogram (hg)
Deca (da) + gram(g) = Decagram (dag)
Deci (d) + gram(g) = Decigram (dg)
Centi (c) + gram(g)= Centigram (cg)
Milli (m) + gram(g)= milligram (mg)
These terms only measure mass.

12. Prefixes + Suffixes for Volume(Liters)
Prefix + Suffix = Term
Kilo (k) + Liter (L) = Kiloliter (kL)
Hecto (h) + Liter(L) = Hectoliter (hL)
Deca (da) + Liter (L) = Decaliter (daL)
Deci (d) + Liter (L) = Deciliter (dL)
Centi (c) + Liter (L) = Centiliter (cL)
Milli (m) + Liter (L) = milliliter (mL)
These terms only
measure volume.

13. Prefixes + Suffixes for length(meters)
Prefix + Suffix = Term
Kilo (k) + meter(m) = Kilometer (km)
Hecto (h) + meter(m) = Hectometer (hm)
Deca (da) + meter (m) = Decameter (dam)
Deci (d) + meter (m) = Decimeter (dm)
Centi (c) + meter (m) = Centimeter (cm)
Milli (m) + meter (m) = millimeter (mm)
These terms only
measure meters.

14. Why do we have specific prefixes for each type of measurement… Length
A big
measurement Km
hm/ dam
dm/ cm
A small
one mm

15. Same scenario works for volume and mass
Volume – what units (prefix + suffix) would you use to measure the volume of this?_______
Mass - what units (prefix + suffix) would you use to measure the mass of this?_________

16. How to measure volume You measure the meniscus
Meniscus is the bottom of the dip of water.

17. Determining what each line may represent on a measuring tool.
Step 1 – find any two numbers… example 50 and 40
Step 2 – subtract the two… 50 – 40 = 10
Step 3 – count the lines in between them… start at the line above the bottom number, and stop at the line that is the top number. Example… from 40 to 50 I count 10 lines.
Step 4 – divide the answer from step 2 by the answer from step 3…. 10 divided by 10 = 1
Your answer from step four tells you that each line equals 1.
This example the meniscus would read 43mL

18. How to measure length 10mm = 1cm 10cm = 1dm 10dm = 1m 10m = 1dam
10dam = 1hm
10hm = 1km
1cm
1mm

19. How to measure mass Always measure in grams
As shown the balance is 373.3g
= 373.3g

20. Metrics - Temperature Celsius-
standard form of temperature measurement
Abbreviation
C (Capitol)
Human body is 98.6 F, and that is 37 C

21. Great… How do I do conversions?
Kilo-
(k)
Hecta-
(h)
Deca-
(da)
Meter (m), Liter (L), Gram (g)
Deci-
(d)
Centi-
(c)
Milli-
(m)
1000 units
100 units
10 units
1 unit
.1 units
.01 units
.001 units
0.056
0.56
5.6 56
560
5600
56000
/1000
/100
/10 1
X10
X100 X
1000

22. To remember
Kids
Have
Damaged 3
Different
Colorful
Millipedes

23. Great… How do I do conversions? Example #1: 0.250kg mg
Kilo-
(k)
Hecta-
(h)
Deca-
(da)
Gram (g)
Deci-
(d)
Centi-
(c)
Milli-
(m)
0.250 1x 2x 3x 4x 5x 6x
2.5
25.
250.
2500.
25,000.
250,000. mg
The decimal is moving

24. How do I do conversions?....cont Example #1: mL L Note: If you have a whole number, the decimal is always at the end of the very right number. Example 12.0
Kilo-
(k)
Hecta-
(h)
Deca-
(da)
Liter(L)
Deci-
(d)
Centi-
(c)
Milli-
(m) 3x 2x 1x
12.0
0.012
0.12
1.2
0.012L .
The Decimal is moving