1. Drill: Use the metric prefixes to define these terms
IOT POLY ENGINEERING
I1-08
Drill: Use the metric prefixes to define these terms
WHAT IS THE DEFINITION OF …
Millisecond
Kilogram
Megawatt
Nanometer
=10-3 seconds
=103 grams
=106 Watts
=109 meters

2. Base Units 7 FUNDAMENTAL SI UNITS: LENGTH - meter MASS - kilogram
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Base Units
7 FUNDAMENTAL SI UNITS:
LENGTH meter
MASS kilogram
TIME second
ELECTRIC CURRENT ampere
THERMODYNAMIC TEMPERATURE - Kelvin
AMOUNT OF MATTER mole
LUMINOUS INTENSITY candela

3. IOT POLY ENGINEERING
I1-08
Derived Units
Base units can be multiplied or divided to create derived units
Examples
Area = Length*Width
Has units of Length2(ex ft2, m2)
Volume = Length * Width * Height
Has units of Length3 (ex. ft3, m3)
Speed = Distance/Time
Has units of Length/Time (ex. mph, m/s)

4. Derived Units Units can be converted between different types of units
IOT POLY ENGINEERING
I1-08
Derived Units
Units can be converted between different types of units
Ex. Convert 2 feet into inches.
Use conversion factor (1 ft = 12in)
Set up ratios to multiply factors

5. Derived Units Ex: Convert 3 miles into inches
IOT POLY ENGINEERING
I1-08
Derived Units
Ex: Convert 3 miles into inches
1 ft = 12 inches
1 mile = 5280 ft
Ex: Convert 3 kilometers to centimeters
1 km = 1000 m
1 cm = 0.01 m

6. Derived Units Ex: Convert 55 miles/hr into m/s I1-08 1 mile = 5280 ft
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I1-08
Derived Units
Ex: Convert 55 miles/hr into m/s
1 mile = 5280 ft
1 ft = 12 inches
1 inch = 2.54 cm
1 cm = 0.01m
1 hr = 60 min
1 min = 60 s

7. Classwork With a partner convert the following I1-08
IOT POLY ENGINEERING
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Classwork
With a partner convert the following
5 lbs into kg (1kg = 2.2 lb)
Convert 10 mph into m/s
Convert 2 miles into kilometer

8. Homework Convert 3 miles into feet Convert 4 km into mm
IOT POLY ENGINEERING
I1-08
Homework
Convert 3 miles into feet
1 mile = 5280 feet
Convert 4 km into mm
1 km = 1000m
1 mm = m
Convert 20 feet into meters
1 ft = 12 in
1 in = 2.54 cm
1 cm = 0.01m