Why are SI units used so often in science?

Answer 1

Because it is a SYSTEM and was designed for ease of use. The accumulation of English-Imperial-American-Customary units is not a system. Example. A cubic inch of water weighs what? Versus- a cubic cm or water is a ml and weighs one gram. The best way to get to know the metric system is to NEVER covert units from inches, etc. Just use metric--it's simple! Conversion are hard and a huge bother. Science has used the metric system for a couple centuries. Many important units are defined in metric terms and nothing else.

Answer 2

The ease of calculations and unit changes come from the SI systems standardization of derived measures. SI units include the the kilogram, liter and Newton. Changes are simplified as units can be cancelled out in equations, and there is no need to convert to other measures such as US/Imperial.

Answer 3

Because for most things all you need to know is the 10 times table which, given the fact that we use the decimal system for counting, means that all you need to know is how and when to move the decimal point to the left or right. Or, equivalently, change the prefix for the name of the unit.

With the Imperial system you need to know the tables for

2 Pints to Quarts

3 Yards to Feet

4 Quarts to Gallons

8 Pints to Gallons

12 Inches to Feet

14 Pounds to Stones

16 Ounces to Pounds

20 Fluid Ounces to Pints

and many others.

Answer 4

The SI system is used by almost all countries in the world, for most all types of measurement. If you have a crack at SI in wikipedia you'll see it is so.

Even in the US, the metric system of measurements has been legal for a long time, even if not widely used.

There are some exceptions however, such as in the weight of precious stones, or of the purity of gold.

Answer 5

It eliminates ambiguity (if someone says "miles", do they mean US statute miles? Nautical miles? Imperial miles? Something else?) and the fact that the units are (almost) all based on the decimal system makes it trivial to convert from larger units to smaller ones (compare miles: there are 8 furlongs in a mile 40 rods in a furlong, 5.5 yards in a rod, 3 feet in a yard, 12 inches in a foot... it's a ridiculous series of conversion factors to memorize).

Answer 6

I was asking the same thing but i think its easier for scientists because they could communicate with other scientists in the world without to much confusion.

Answer 7

because everything is based on the power of 10. the measures all realate to the number 10. and the prefixes

Answer 8

SI units are more accurate than English system units

Answer 9

Results obtainned from various scientific works are to be accepted world wide. SI UNITS are internationally accepted units. so, every scientific works are done in SI unit.

Answer 10

Well, Its Not Really Easy Its Probably Because Your Good At Converting In The Metric System's . You Are probably Ahead Of Kids To Make It easy For You.