International System of Units (SI)

scientists use this metric based system


The basic SI unit of length


Basic unit of volume in the metric system


the force exerted by a mass as a result of gravity


1000 grams


a metric unit of weight


a measure of how hot or cold something is


a temperature scale that defines the freezing point of water as 0 degrees and the boiling point of water as 100 degrees


SI unit of temperature; indicates number of units above absolute zero. To go from Celsius to Kelvin add 273. To go from Kelvin to Celsius subtract 273.

absolute zero

The coldest temperature, 0 Kelvin, that can be reached. It is the hypothetical temperature at which all molecular motion stops.


the ability to do work


si unit of energy


unit of heat defined as the quantity of heat required to raise the temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure



Conversion factor

a ratio derived from the equality between two different units that can be used to convert from one unit to the other

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