Introducing…..Introducing…..

The Metric SystemThe Metric System

The metric system is The metric system is also known as SI: also known as SI:

The International The International System System

of of UnitsUnits

The metric system is a The metric system is a system of measurement.system of measurement.

Why do scientists Why do scientists use the metric use the metric

system?system?

1.1. It is based on the It is based on the number number 10.10.

2.2. It is easy to share and It is easy to share and compare results and compare results and

observations.observations.

3.3. It is based on the It is based on the decimal decimal system.system.

Commonly Used Metric Commonly Used Metric System Units, Symbols, System Units, Symbols,

and Toolsand Tools

Quantity Quantity UnitUnit SymbolSymbol ToolTool

LengthLength MeterMeter m m rulerruler

Volume/capacityVolume/capacity LiterLiter L L graduated graduated cylinder/beakercylinder/beaker

MassMass GramGram g g triple beam triple beam balancebalance

TemperatureTemperature KelvinKelvin K Kthermometerthermometer

CelsiusCelsius oo C C

TimeTime SecondSecond s s clockclock

PrefixPrefix AmountAmount SymbolSymbol ExampleExamplekilokilo 10001000 kk kilogram (kg)kilogram (kg)hectohecto 100100 hh hectoliter (hL)hectoliter (hL)decadeca 1010 dada decameter (dam)decameter (dam)

________ 11 ________ meter (m), gram (g), meter (m), gram (g), liter (L)liter (L)

decideci 0.10.1 dd decigram (dg)decigram (dg)centicenti 0.010.01 cc centimeter (cm)centimeter (cm)millimilli 0.0010.001 mm milliliter (mL)milliliter (mL)

ConversionConversion

Stepping Up Stepping Up

and and

Stepping DownStepping Down

Stepping Up(multiply by 10)

Stepping Down(divide by 10)

kilo

hecto

deca GramLiterMeter

deci

centi

milli

Let’s Practice!Let’s Practice!

The mass of a car is about The mass of a car is about

A. A. 1,540 mg1,540 mg

B.B. 1500 g1500 g

C.C. 1,500 kg1,500 kg

D.D. 100 kg100 kg

C.C. 1,500 kg1,500 kg

A drinking glass holds about A drinking glass holds about liquid. liquid.

A. A. 8 L8 L

B.B. 200 mL200 mL

C.C. 750 mL750 mL

D.D. 2 L2 L

C.C. 750 mL750 mL

A bucket can hold about A bucket can hold about liquid. liquid.

A. A. 1 L1 L

B.B. 8 L8 L

C.C. 500 mL500 mL

D.D. 30 mL30 mL

B.B.8 L8 L

To measure the capacity of a To measure the capacity of a carton of milk, use:carton of milk, use:

A. A. gramsgrams

B.B. kiloliterskiloliters

C.C. kilogramskilograms

D.D. litersliters

D.D.litersliters

To measure the mass of a To measure the mass of a dictionary, use:dictionary, use:

A. A. tonstons

B.B. kilogramskilograms

C.C. millilitersmilliliters

D.D. litersliters

B.B. kilogramskilograms

To measure the capacity of a To measure the capacity of a pitcher of lemonade, use:pitcher of lemonade, use:

A. A. tonstons

B.B. kilogramskilograms

C.C. millilitersmilliliters

D.D. litersliters

D.D.litersliters

To measure the mass of a To measure the mass of a quarter, use:quarter, use:

A. A. millilitersmilliliters

B.B. kilogramskilograms

C.C. gramsgrams

D.D. litersliters

C.C. gramsgrams

To measure the length of a To measure the length of a candy bar, use:candy bar, use:

A. A. gramsgrams

B.B. metersmeters

C.C. centimeterscentimeters

D.D. inchesinches

C.C. CentimetersCentimeters

To measure the mass of a truck, To measure the mass of a truck, use:use:

A. A. kilogramskilograms

B.B. litersliters

C.C. kiloliterskiloliters

D.D. gramsgrams

A. A. kilogramskilograms

To measure the mass of a To measure the mass of a feather, use:feather, use:

A. A. millilitersmilliliters

B.B. milligramsmilligrams

C.C. kilogramskilograms

D.D. kiloliterskiloliters

B. B. milligramsmilligrams

To measure the mass of a sheet To measure the mass of a sheet of notebook paper, use:of notebook paper, use:

A. A. millilitersmilliliters

B.B. milligramsmilligrams

C.C. kilogramskilograms

D.D. kiloliterskiloliters

B.B. milligramsmilligrams

To measure the mass of a tuba, To measure the mass of a tuba, use:use:

A. A. litersliters

B.B. kiloliterskiloliters

C.C. gramsgrams

D.D. kilogramskilograms

D.D.kilogramskilograms

To measure the length of To measure the length of Highway 49, use:Highway 49, use:

A. A. gramsgrams

B.B. metersmeters

C.C. centimeterscentimeters

D.D. kilometerskilometers

D.D.kilometerskilometers

Next time we Next time we meet, we will do meet, we will do

metric conversion.metric conversion.

Yahoo!!!!Yahoo!!!!