1. SWBAT use and convert SI units and other basic units of measurement
Warm Up G = x 10-11
The mass of two balls is 0.80 kg each and they are separated by a distance of 0.25 meters. Calculate the gravitational force between the two balls.

2. 1.4 – 1D SI units
Base units are meter (m), kilogram (kg), and second (s). Area = m2 Volume = m3 ( = 1000 Liters) Velocity = m/s or ms-1 Density = kg m-3

3. Dimensional Analysis is the Factor Label Method
Begin by writing the units you start with as a fraction.
Multiply by the converting factor
The unit you are converting into lines up across from the unit form which you are converting!
Cancel out units in fractions and check to see more conversions are necessary.
Do the math!

4. Exercise 1-O
Pg 28 #3-6

5. 1.4 Advanced SI Units
When converting between Square Units for area, the conversions are also squared! 100 cm = 1 m 1 x 104 cm2 = 1 m2 (100cm x 100cm) Volume units are cubed! 1m3 = 1m x 1m x 1m = 100cm x 100cm x 100cm = 1 x 106 cm3

6. Advanced SI unit Practice
Pg 30 # 3 & 4

7. Non- SI units Accepted by SI - pg 31
Time {Minute, Hour, Day) Area {hectare} Volume {Liter} Mass {Tonne}

8. Non SI Practice
Pg #7, 9

9. Temperature H2O Freezes H2O Boils Fahrenheit °F 32° 212°
Celsius °C 0° 100°
Kelvin K
A degree in Celsius has same change of thermal energy as a unit of Kelvin.
The Kelvin scale is skewed below Censius to begin at absolute zero

10. Converting from Kelvin and Celsius
Tc = TK – Convert 37°C into Kelvin: 37 = TK – = TK K = TK

11. Converting From °C to °F
Cannot use FLM or Dimensional Analysis
Tf = TC + 32
Convert 68°F to °C
68 = TC x 36 = 9 TC
68-32 = TC 180 = 9 TC
36 = TC 20 = TC

12. Temp Practice
Pg 34 #1-2

13. HW
Chapter pg 34-47:
Review Part 1 and 2
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