* It's a metric scale: Celsius is part of the metric system, used widely in science and most of the world (except for the US).

* Based on water: The Celsius scale defines 0 degrees as the freezing point of water and 100 degrees as the boiling point of water at standard atmospheric pressure.

* Uses centigrade units: The Celsius scale is sometimes referred to as the centigrade scale because it uses units of one hundredth (centi-) of a degree.

* Commonly used: Celsius is used for everyday temperature measurement in most countries.

* Linear scale: Celsius is a linear scale, meaning the intervals between degrees are consistent.

Here are some things that are NOT true about the Celsius scale:

* It's not the only metric temperature scale: There's also the Kelvin scale, which is the absolute temperature scale.

Let me know if you'd like to know more about Celsius!