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Lesson 3 Measuring with SI and Metric Units

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SI Units There are two types of units: –fundamental (or base) units; –derived units. Units of Measurement

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Powers of ten are used for convenience with smaller or larger units in the SI system. There are 7 Fundamental (Base) SI Units

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Common Non-SI Units Physical QuantityName of UnitAbbreviation VolumeLiterL TemperatureCelsius oCoC EnergyCaloriecal

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SI and Metric System Utilize prefixes Powers of ten are used for convenience with smaller or larger units. Units of Measurement Selected Prefixes used in SI System

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Linear Measurement

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Measurement of 1.Distance from place to place 2.Size Measuring Equipment 1.Ruler 2.Meter Stick 3.Tape measure 4.LASER

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Volume Measurement

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Volume Measurement Measurement of 1. How much space an object takes up 2. How much capacity Measuring Equipment 1. Graduated cylinder 2. Ruler

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Volume Units of Measurement

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Volume The units for volume are given by (units of length) 3. –SI unit for volume is 1 m 3. We usually use 1 mL = 1 cm 3. Other volume units: –1 L = 1 dm 3 = 1000 cm 3 = 1000 mL. Units of Measurement

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Mass Measurement

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Measurement of How much matter something has Measuring Equipment Balance

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Temperature Measurement

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A measurement of: Average kinetic energy of the particles of matter Measuring equipment Thermometer Three temperature scales: Kelvin Scale Celsius Scale Fahrenheit Scale Temperature

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