Temperature is the measure of warmth or coldness of an object. When numerical units are used to describe the warmth or coldness of an object, a temperature scale is needed. Three different temperature scales are used worldwide.
Fahrenheit Temperature Scale
The common unit used in the United States
212° boiling point of water
32° freezing point of water
Celsius Temperature Scale
A scale used in places that metric units have been adopted. The scale used for scientific research.
100° boiling point of water
0° freezing point of water
Kelvin Temperature Scale
Based on absolute zero as the lowest temperature on the Kelvin scale. Absolute Zero is the theoretical temperature where molecules, the smallest particles of a pure substance, have their lowest energy.
373° boiling point of water
273° freezing point of water