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Published byBruce Davidson Modified over 5 years ago

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The Metric System Universal system of measurement. (Based on 10s) - “easy” conversions Uses base units with prefixes to ID degree of measure Everyone uses it, especially in science and medicine.

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Base Units: Length, Mass, & Volume Length is the distance between two points –measured in meters. Mass is the amount of matter in an object –measured in grams. Volume is the amount of space taken up by an object –measured in liters.

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The Tools Length – Meter stick or ruler Volume – Graduated cylinder or submersion Mass – Balance or scale

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Prefixes and Conversion – The Metric Stairs Mega – 1,000,000 Kilo – 1000 Hecto – 100 Deka – 10 BASE UNIT – 1 Deci – 1/10 Centi – 1/100 Milli – 1/1,000 Micro – 1/1,000,000 Nano – 1/1,000,000,000

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Prefixes in the Metric System Kilo (k) - base times 1000 Hecto (h) – base times 100 Deca (dk) – base times 10 BASE UNIT (meter, liter, or gram) Deci (d) – base divided by 10 Centi (c) – base divided by 100 Milli (m) – base divided by 1000 King Henry Died ByBy Drinking Chocolate Milk Mega (M) – base times 1,000,000 Micro (µ) – base divided by 1,000,000 Nano (n) – base divided by 1,000,000,000

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Work & Energy (J) Joules Derived unit Work & Energy (J) Joules Derived unit Power (W) Watt Derived unit Power (W) Watt Derived unit Pressure (Pa) Pascal Derived unit Pressure (Pa) Pascal Derived unit Potential Difference (V) Volts Derived unit Potential Difference (V) Volts Derived unit Electrical Current (A) Amperes Derived unit Electrical Current (A) Amperes Derived unit Frequency (Hz) Hertz Derived unit Frequency (Hz) Hertz Derived unit Time (s) seconds BASE Unit Not based on 10’s Time (s) seconds BASE Unit Not based on 10’s

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Books use the KMS or gcs standard kms –kilogram (mass) –meter (length) –Second (time) gcs –grams (mass) –cm (length) –Second (time)

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