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The only SI unit that's used by everyone in the US is the unit of time ... the 'second'.
All of the other SI units are used in the US, but only by people who make things that
they want to be able to sell to other countries, and by people who want to be able to
shop in other countries and understand the products they see, and by people who
are involved in scientific or technological activities and want to be able to understand
what other scientists and engineers are doing.
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What is 1 1000 of a gram?
A miligram. Grams are an SI unit, so they go with all the standard SI prefixes.
What is the unit of a mass that is equal to one one thousandth of a gram?
A "milligram". In general, the prefix "milli-" means 1/1000, no matter what unit it is used with; I recommend that you check the Wikipedia article on "SI prefixes", for additional prefixes of this kind.
How do you measure temperature in the SI measuring system?
The SI unit of measurement for temperature is the kelvin(K). Celsius is not an SI unit (it is a metric unit), but may be used alongside it.
Explain why prefixes are useful with SI units?
Sometimes you need a very large, or a very small, amount of a certain unit. One way to deal with that is to use prefixes like kilo, mega, milli, micro, and others.
What is the fundamental unit of mass in the metric system?
The fundamental unit is the gram. However the standard unit (SI) used is the kilogram (1000 grams).AnswerThe terms 'fundamental unit' or 'standard unit' are not used in SI. The correct term is 'base unit', and the base unit for mass is the kilogram.
