Units

Note: This lesson was completed on the 11th and the 18th February.

Units. There are tons and billions of units in the world. Who doesn't know that? For mass, we have grams (g), kilograms (kg), Metric tonne (t), pound (Ib), Ounces (oz), Stones (st), etc. For length, we have Centimetres (cm), Feet (ft), Inches (In), Kilometres (km), miles (mi), Nautical miles (nmi), Yards (yd), etc. For Temperature, we have Celsius (°C), Fahrenheit (°F) and Kevin (K). There are tons and tons of it. However, what happens when there is no standard unit? There must be a standard unit around the world!

The International System of Units, also known as the SI units, was invented in the 1960. The SI Units consist of SI base units, and the SI derived units.

The SI basic units are as below:

SI Base Units

The SI Base Units usually do not have a prefix, with the exception being kilo in kg. 

The SI derived units shows how it is derived from SI base units, as shown below:

SI Derived Units