Measurements! 1. Background on SI Units Scientists use the metric system which is the international...
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Transcript of Measurements! 1. Background on SI Units Scientists use the metric system which is the international...
Measurements!
1
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.
2
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