Metric System

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BELLWORK 8/14/14
1. What is a counselor?
A counselor is a person trained to give
guidance on personal, social, or psychological
problems.
2. What does a school counselor do?
Counselors help all students in the areas of
academic achievement, personal/social
development and career development,
ensuring today's students become the
productive, well-adjusted adults of tomorrow
3. Who is our counselor here at the “Soss”?
Ms. Morgan
Materials:
-PRIDE Card
-IN
-Pencil/Pen
LET’S GO OVER THE PRE-TEST
Metric System
8/14/14 The Metric System
??
BILL NYE – MEASUREMENTS AND
THE METRIC SYSTEM VIDEO
http://www.cleanvideosearch.com/media/action/yt/watch?v=_E53TKNVH0c
BELLWORK 8/15/14
1. Create a circle map showing things
that need to be measured.
Measurement
Materials:
-PRIDE Card
-IN
-Pencil/Pen
LEARNING TARGETS AND TARGET
TEST TRACKING!
• Glue in Target Test
bubbles to the back page
of your IN.
• Write in Learning Target 1
• Fill in Bubble with TT1
score 
Learning Targets
1. Identify the
function of
materials we use
in the science lab.
Target Tests
BELLWORK 8/18/14
1. List 5 things from your circle map
(example: distance from your
house to school)
2. What units would you use to
measure each of the above
items?
Materials:
-PRIDE Card
-IN
-Pencil/Pen
How do YOU measure things?
What UNITS do you use to measure?
The International System
• Abbreviated “SI” from
the French phrase: Le
Système international
d'unités
• It is the world's most
widely used system of
measurement.
• AKA the Metric System!
Metric System
Length
Mass
Volume
Meters (m)
Grams (g)
Liters (L)
Prefix vs. Suffix
• The suffix is the root word
• It always comes after the prefix.
• Example: multivitamin – “multi” is the
prefix and “vitamin” is the suffix
• Prefixes by themselves don’t mean
anything.
• Example, the prefix “Un” means nothing
• Added to unhappy means not happy.
These are the Suffixes….
Metric System
Length
Mass
Volume
Meters (m)
Grams (g)
Liters (L)
Metric Prefixes
•
•
•
•
•
•
•
Kilo (k) – largest
Hecto (h)
Deca (da)
BASIC UNIT!!
Deci (d)
Centi (c)
Milli (m) – smallest
Length
Mass
Volume
Kilo + meter
Kilo + gram
kilo + liter
hectometer
hectogram
Hectoliter
Decameter
Decagram
Decaliter
Decimeter
Decigram
Deciliter
Centimeter
Centigram
centiliter
Millimeter
Milligram
milliliter
• They will never be by
themselves, they have to
be written with a suffix.
Why do we have specific prefixes for
each type of measurement… Length
A big measurement
Km
A small one
mm
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?_________
Quick Quiz
What units (prefix + suffix) would you use to measure….
1.
2.
3.
Lesson 1:
Length
English vs. Metric Units
Which is longer?
A. 1 mile or 1 kilometer
B. 1 yard or 1 meter
1 mile
1.6 kilometers
C. 1 inch or 1 centimeter
1 inch = 2.54 centimeters
1 yard = 0.9444 meters
Left Image: http://webapps.lsa.umich.edu/physics/demolab/controls/imagedemosm.aspx?picid=1167
Right Image: http://share.lancealan.com/N800%20ruler.jpg
Metric Units
The basic unit of length in the metric system in the
meter and is represented by a lowercase m.
Metric Units
1 Kilometer (km) = 1000 meters
1 Meter = 100 Centimeters (cm)
1 Meter = 1000 Millimeters (mm)
Which is larger?
A. 1 meter or 105 centimeters
C. 12 centimeters or 102 millimeters
B. 4 kilometers or 4400 meters
D. 1200 millimeters or 1 meter
Measuring Length
How many millimeters are in 1 centimeter?
1 centimeter = 10 millimeters
2.8
What is the length of the line in centimeters? _______cm
28
What is the length of the line in millimeters? _______mm
• You have been hired on by the esteemed company
MAMMA.
• Your job is to accurately measure and weigh anything
and everything in front of you!
• If you are able to complete the following tasks you
will be promoted to chemist (which is a necessity to
continue further in Miss Miks’ class!!)
Three parts:
1. Length
2. Mass
3. Volume
Good luck and happy measuring!
Lesson 2:
Mass
English vs. Metric Units
Which is larger?
1. 1 Pound or 100 Grams
1 pound = 453.6 grams
2. 1 Kilogram or 1 Pound
3. 1 Ounce or 1000 Milligrams
1 ounce of gold =
28,349.5 milligrams
100 kilogram =
220 pounds
Metric Units
Mass refers to the amount of matter in an object.
The base unit of mass in the metric system in the
kilogram and is represented by kg.
Metric Units
1 Kilogram (km) = 1000 Grams (g)
1 Gram (g) = 1000 Milligrams (mg)
Which is larger?
A. 1 kilogram or 1500 grams
C. 12 milligrams or 12 kilograms
B. 1200 milligrams or 1 gram
D. 4 kilograms or 4500 grams
Kilogram Prototype Image - http://en.wikipedia.org/wiki/Kilogram
Measuring Mass
We will be using triple-beam balances
to find the mass of various objects.
The objects are placed on the scale and
then you move the weights on the beams
until you get the lines on the right-side of
the scale to match up.
Once you have balanced the scale, you add up
the amounts on each beam to find the total mass.
What would be the mass of the object measured
in the picture?
70g
300g + _______
373.35 g
3.35g = ________
_______
+ ______
Lesson 3:
Volume
English vs. Metric Units
Which is larger?
1 fl oz = 29.573 ml
A. 1 liter or 1 gallon
1 12-oz can of soda
would equal
approximately 355 ml.
B. 1 liter or 1 quart
C. 1 milliliter or 1 fluid ounce
1 quart = 0.946 liters
1 gallon = 3.79 liters
It would take approximately 3 ¾
1-liter bottles to equal a gallon.
Metric Units
Volume is the amount of space an object takes
up.
The base unit of volume in the metric system in
the liter and is represented by L or l.
Metric Units
1 liter (L) = 1000 milliliters (mL)
1 milliliter (mL) = 1 cm3 (or cc) = 1 gram*
Which is larger?
A. 1 liter or 1500 milliliters
B. 200 milliliters or 1.2 liters
C. 12 cm3 or 1.2 milliliters*
Measuring Volume
We will be using graduated cylinders to
find the volume of liquids and other objects.
Read the measurement based on the bottom of the
meniscus or curve. When using a real cylinder, make
sure you are eye-level with the level of the water.
43
What is the volume of water in the cylinder? _____mL
What causes the meniscus?
A concave meniscus occurs when the molecules of the liquid
attract those of the container. The glass attracts the water on
the sides.
Measuring Liquid Volume
What is the volume of water in each cylinder?
37mL
52mL
23mL
Pay attention to the scales for each cylinder.
Measuring Solid Volume
9 cm
8 cm
We can measure the volume of regular object
using the formula length x width x height.
10cm
_____
8cm
720cm3
9cm = _____
X _____
X _____
10 cm
We can measure the volume of
irregular object using water displacement.
260cm3
Amount of H2O with object = ______
About of H2O without object = 200cm3
______
60cm3
Difference = Volume = ______
Lesson 5:
Unit Conversions
Great… How do I do conversions?
Meter
(m), Liter
(L), Gram
(g)
Deci- Centi(d)
(c)
Milli(m)
10
units
1 unit
.1
units
.01
units
.001
units
0.56
5.6
56
560
5600
56000
/100
/10
1
X10
X100 X 1000
Kilo(k)
Hecta- Deca(h)
(da)
1000
units
100
units
0.056
/1000
How do I remember the order??
OR…
•
•
•
•
•
•
•
Kids
Have
Damaged
3
Different
Colorful
Millipedes
Example #1:
Kilo(k)
Hecta- Deca(h)
(da)
0.250
0.250
0.250kg
Gram (g)
mg
Deci- Centi- Milli(d)
(c)
(m)
The decimal is moving
1x
2x
3x
4x
5x
6x
2.5
25.
250.
2500.
25,000.
250,000.
250,000.
mg
Example #2:
12mL
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- Deca(h)
(da)
Liter(L)
Deci- Centi- Milli(d)
(c)
(m)
The Decimal is moving
3x
2x
1x
0.012
0.12
1.2
0.012L
12.0
12.0
.
Quick Quiz- Conversions!
Metric System Foldable!!
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