The SI system (French for International System) is used in science for two main reasons. The first is so that scientists anywhere in the world will have a common system of measurements. This allows the easy exchange of data and ideas among scientists.
The second reason is a bit more complicated. The British Standard system that we use in the U.S. is mostly based on unrelated units that were arrived at hundreds of years ago. The units were thought up randomly as they were needed. The foot doesn't relate to the pound. The ounce has no relationship to the ton. The SI (often called the metric system) is based on standards found in the natural world. If all the meter sticks disappeared, they could be recreated from the standard.
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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.
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.
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
a system of measurement for science, industry and commerce
because it shows the measurements in physical science
The symbol ''Si'' in Science stands for Silicon.