1. Standards of Measurement Section 1-2

2. Units and Standards   Metric units include StandardStandard

3. Example  No meter stick  Will the desk fit through the door?  Measure with my hands  Measure with your hands  No standard!

4. International System of Units  Abbreviated SI from  Improved version of the metric system  Each SI measurement has a Base unit Length –Length – Mass -Mass -

5. SI Prefixes  Based on Multiples of 10     

6. Converting SI Units  Bridges  Top of Bridge =  1 meter = dm  1 meter = cm  1 meter = mm  1000 meters = km

7. Convert the following:  1.255 liters to ml  3075 cm to m

8. More conversions:  11cm to mm  675 m to km  345 mm to km

9. Measuring Distance  Base unit =  Size of the object  Activity pg.17  13mm is easier to understand than 0.013m

10. Measuring Volume  Volume =  Volume = (for solids)  Liquid volumes are measured in  1 Liter = dm 3  1 Liter = ml  1 cm 3 = ml

11. Conversions  1.5 liters to ml  1.5 liters to cm 3

12. Measuring Matter  Mass =  Ping pong ball and golf ball have the  Density = Unit for density could be g/cm 3Unit for density could be g/cm 3  If an object has a mass of 10g and a volume of 2 cm 3 Density =Density =

13. Measuring Time and Temp.  Base unit for time  Base unit for temp. Most scientific work is done using celsiusMost scientific work is done using celsius 0 Kelvin is the coldest possible temp. also know as0 Kelvin is the coldest possible temp. also know as 0 kelvin= -273 0 C (273 degrees below the freezing pt. of water)0 kelvin= -273 0 C (273 degrees below the freezing pt. of water)