Question

why are si units preferred in scientific work?
multiple choice

• si units are based on easily relatable things like the length of ones foot or the mass of a penny.
• the international system si uses a well-defined set of internationally agreed upon standard units and makes measurements in terms of these units, their combinations, and their powers of ten.
• the international system si uses a culturally-defined set of units, which makes it convenient for scientists with different cultural backgrounds.
• si units are easy to convert between because they use a base of 2 or 12, depending on the situation.

Explanation:

• Option A is wrong as SI units are not based on such non - standard, variable references.
• Option C is wrong as SI units are internationally standardized, not culturally - defined.
• Option D is wrong as SI units use a base of 10 for conversions, not 2 or 12.
• Option B correctly states that SI has internationally agreed - upon standard units and uses powers of ten for measurements, which is why it's preferred in science.

Answer:

B. The international system SI uses a well - defined set of internationally agreed upon standard units and makes measurements in terms of these units, their combinations, and their powers of ten.