If you are referring to the International System of measurements (commonly also called the metric system): it is important because all measurements are know to be the same and can be compared to a standard, no matter where you are. Also, the units are commonly used, and there are no ambiguous units (US gallon, Imperial gallon, ounce - is it volume or mass, dry quart or liquid quart are some examples).
cause
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.
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.
it is the science which is used for calculation of medications dose in the field of hospital.
In science, the SI unit for mass is Kilograms (Kg)
The SI unit of mass is the kilogram.
4 oz is an inappropriate measurement in a science experiment because it is not an SI (System International) unit. The SI unit for mass is the kg.
its used for animals to drink and for used to use for??
It helps man to live more easily. It also encourages man to work on different ideas.
It is much better for everybody to use a common standard - and the international standard is the SI.
Because SI units are globally recognised (with the exception of Burma, Liberia and USA). SI stands for 'System International' See the related link to WIkipedia for more information.
What units can si is in widespread use and is acceptable for use with si