Standards of Measurement Section 1-2. Units and Standards   Metric units include StandardStandard.

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Presentation transcript:

Standards of Measurement Section 1-2

Units and Standards   Metric units include StandardStandard

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

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

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

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

Convert the following:  liters to ml  3075 cm to m

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

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

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

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

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 =

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= C (273 degrees below the freezing pt. of water)0 kelvin= C (273 degrees below the freezing pt. of water)