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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MASS1. 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

3. Instrument:

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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VOLUME1. Definition:

* Volume is the amount of space an object takes up

2. Base Unit: * liquid volume = liter (L)

* solid volume = cubic meter (m3)

LIQUID VOLUME3. Instrument:

* Liquid Volume - beaker, graduated cylinder, or a flask

SOLID VOLUME3. Instrument:

* Solid volume - metric ruler using the formula:

L x W x H = V3cm x 2cm x 4cm = 24cm3

LENGTH1. Definition: * Length is a measure of distance2. Base Unit:

* meter (m)* longer lengths = kilometers (km)* shorter lengths = centimeters (cm)

3. Instrument:* metric ruler* for very large distances: light year

TEMPERATURE1. 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

HAVE A NICE DAY!!!

“Be the change you wish to see in the

world.”- M. Gandhi