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Measurements!

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Background on SI Units Scientists use the metric system which is the international system (SI) of measurement. France was the 1st country to adopt the metric system in 1795.

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Standardization SI units were designed to provide a worldwide standard of physical measurement for science, industry, and commerce. SI was adopted worldwide in 1960.

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**MASS 1. Definition: * Mass is the amount of matter in an object.**

2. Base Unit: * gram (g) * larger masses = kilogram (kg) * smaller masses = milligram (mg)

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MASS Triple Beam Balance or Digital Scale 3. Instrument:

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REMINDER about MASS Weight is a measurement of force, and will change depending on gravity. The weight of an object can change but the mass remains the same.

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VOLUME 1. Definition: * Volume is the amount of space an object takes up 2. Base Unit: * liquid volume = liter (L) * solid volume = cubic meter (m3)

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**LIQUID VOLUME Beaker Erlinmeyer Flask Graduated Cylinder Volumetric**

3. Instrument: * Liquid Volume - beaker, graduated cylinder, or a flask Beaker Erlinmeyer Flask Graduated Cylinder Volumetric Flask

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**SOLID VOLUME 3cm x 2cm x 4cm = 24cm3 L x W x H = V 3. Instrument:**

* Solid volume - metric ruler using the formula: L x W x H = V 3cm x 2cm x 4cm = 24cm3

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**LENGTH 1. Definition: * Length is a measure of distance 2. Base Unit:**

* meter (m) * longer lengths = kilometers (km) * shorter lengths = centimeters (cm) 3. Instrument: * metric ruler * for very large distances: light year

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**TEMPERATURE 1. Definition:**

* Temperature is the measurement of the amount of heat in an object 2. Base Unit: * Celsius (⁰C) * very hot or very cold temperatures = degrees Kelvin (K) 3. Instrument: * thermometer

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**“Be the change you wish to see in the world.”**

HAVE A NICE DAY!!! “Be the change you wish to see in the world.” - M. Gandhi

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