What are the advantages of usingstandard units over arbitrary units?(Any 2 points)
Answers
Required Answer:
☑ The greatest advantage of SI is that it has only one unit for each quantity (type of measurement).
☑ This means that it is never necessary to convert from one unit to another (within the system) and there are no conversion factors for students to memorize. For example, the one and only SI unit of length is the meter (m).
Answer:
The greatest advantage of SI is that it has only one unit for each quantity (type of measurement). This means that it is never necessary to convert from one unit to another (within the system) and there are no conversion factors for students to memorize. For example, the one and only SI unit of length is the meter (m).
Explanation:
Before discussing the benefits of standard versus nonstandard units of measurement, a definition of each term is in order.
NONSTANDARD UNITS OF MEASURE are inexact, imprecise units. A handful serves as a perfect example. So many of us have very different hands, some much larger than others. In the golf clubhouse, when signing in there is a huge bowl with golf teas. “GRAB A FREE HANDFUL” the sign reads. It is a pretty sure bet most golfers will walk out with a different amount.
STANDARD UNITS OF MEASURE are precise, exact units. A yard serves as a perfect example. A yard is exactly one very precise length equal to 36 inches and 3 feet —- wherever the yard is employed and whoever employs it. It is the same everywhere for everybody.This makes it standard.
A discussion of advantages and disadvantages of both types of units basically settles upon one major issue —- the need to be precise.
“This truck cannot weigh more than 36 tons when crossing this bridge.” “Inject all people 3 years and older with 0.5 ml inactivated influenza for the regular influenza.”. Such examples show the importance of standard units of measure.
Not always is such precision important. “Take a left about 3 minutes up the road where the big bank is, and the restaurant will be on your right.“ “ Buy 8 small eggnog glasses for tonight’s party.”