Its constant; America is the only country that doesnt use it. It is also easy to move to switch from mm to cm to m to km.
well we use them because its only the metric system that u use in science.AnswerYou shouldn't be using centimetres in science, if you are using the SI system. The centimetre isn't really an SI unit, as SI uses the 'engineering system' in which multiples of 10 raised to the power of plus or minus 3.
SI units are important in science because they provide a standardized system of measurement that allows for consistency, comparability and reproducibility of experimental results. Using SI units ensures clear communication between scientists around the world and facilitates collaboration and advancement in various scientific fields.
The SI unit of mass is the kilogram.
using a prefix to change the value of a Si unit differs because they are logically two different things they don't cope together.
cause
Système International d'unités
The cubic metre, m3.
Si unit
SI units are used in Science Classes because they are universal and standard, and they are also easier to use because they are based no the power of ten.
SI units are more accurate than English system units
The SI (Systeme International) units have made scientific calculations easier.
SI stands for System Internationale. It allows for standardised units for certain measurements that can be understood all over the world. Whereas stones, pounds and ounces were used to weigh everything in Britain, the SI kg is coming into force. SI units are essential for science. For example, in chemistry, we wouldn't dream of using the Fahrenheit scale for measuring temperature. Either Celsius or the SI Kelvin are used instead.