Metric SystemUnit 2

History• Inch-pound measuring system was adopted

early in this country for two principal reasons1. Most of our trade was with England where the

inch-pound system was in use.2. While the metric system was more uniform in

its application to weights and measures, it was not firmly established in any nation including France where it had its beginning

• Today the International (SI)Metric System is in use in most nations of the world and the US is moving toward the metric system

LengthInternational System of Units (SI)

Metric

• Foot (base)▫ Smaller

Inches Fractions

▫ Larger than a foot Yard Mile

• Meter▫ Smaller than a meter

Millimeter Centimeter Decimeter

▫ Larger than a meter Decameter Hectometer Kilometer

Standard EnglishDistance

• 5280 ft = 1 mile

• 3 ft. = 1 yd• 12 in = 1 ft

Volume/liquid

• 1 gal = 4 qt• 1 qt = 2 pts• 1 pt = 16 oz

Mass

• 1 lb = 16 oz

Conversion1 in = 2.54 cm1 gal = 3.785 l1 lb = 453.59 g

1 kg = 2.2 lbs

Prefixes of Metric UnitsPrefix Example

•Milli = 1/1000 (thousandths)

•Centi = 1/100 (hundredths)

•Deci = 1/10 (tenths)

•Meter (base)•Deca = tens•Hecto = hundreds•Kilo = thousands

• 1 millimeter = 1/1000 meter

• 3 centigrams = 3/100

gram

• 6 deciliter = 6/10 liter

• 7 meters = 7 meters• 2 decameters = 20

meters• 4 hectograms = 400

grams

• 7 kilometers = 7000 meters

Deca Hecto Kilodecicent

imilli Base

Gram (mass /weght) Meter (length) liter (volume/liquids)

•Kilometer (km) = ______ meters•Hectometer (hm) = _______meters•Decameter (dam) = _______ meters•Meter = 1 meter•Decimeter (dm) = _____meter

▫_____dm = 1 meter•Centimeter (cm) = _______ meter

▫______ cm = 1 meter•Millimeter (mm) = _______ meter

▫______ mm = 1 meter

1000100

10

1000

100

101/10

1/100

1/1000

Meter

•Length•Slightly longer than a yard

Gram

•Mass (weight) Kilogram is slightly more than 2 pounds

Liter

•Volume▫Cubic meters (m3)

Dirt, sand and gravel▫Liter

Liquids Approximately the size of a quart

•Complete exercise 2-1

Industry•PACCAR•American Eurocopter•Stark Aerospace•Nissan•Toyota•Severstal

1. Where is industry mail headquarters located?

2. Where are they located in MS? (address)

3. Do they have plants in other countries? If so list them

4. What do they produce?5. List five careers for each

industry. What will a person do in that career?

6. How do you apply for these jobs?