Metric System. SI System Standard International System of measurement – metrics Has seven base units and many other units derived from these seven.

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Presentation transcript:

Metric System

SI System Standard International System of measurement – metrics Has seven base units and many other units derived from these seven

Seven Base Units Quantity Unit Abbreviation length meter m mass gram g time second s temperature kelvin K amount mole mol current ampere amp intensity candela cd

Mass vs Weight Mass is not the same as weight Mass is the amount of matter in a substance Weight is a measure of the pull of gravity on the substance Can you be weightless? Can you be massless?

Derived Units Many other units are used in the metric system, but they are combinations of the base units Speed - meter per sec (m/sec) Volume - volume = length x width x height (m) x (m) x (m) = m m 3 = 1 liter (L) - 1 cm 3 = 1ml

Prefixes Metric system utilizes prefixes which indicate multiples of 10 of the unit kilo- k1000 hecto- h 100 deka- da 10 deci- d.1 centi- c.01 milli- m.001

Converting Between Metric Units 3.65 dam = __________cm 2587 mm = __________hm.0087 hl = __________cl

More Prefixes (see front cover) Mega- M 10 6 Micro- u10 -6 Nano - n10 -9 Pico- p10 -12

Use the appropriate prefixes 3 x 10 6 L 15 x g 8 x 10 8 m 3.5 x A 1.46 x J

Temperature Metric unit – Kelvin – not used for measurement Measured in  C (celsius) K =  C Old system is  F (farenheit) C = 5/9 (F -32) What is 69  F in  C and K?