The prefixes instantly convey how many decimal place moves are required of the numeric value. Unofficial and external sites are not endorsed by Southeastern Louisiana University. Introduction The metric system is the preferred system of scientific units for several reasons: The majority of countries in the world employ the metric system of measurement.
The prefixes attached to metric units carry the same meaning for all base units. Standardized prefixes eliminate the need for extra units, such as the inch or mile. It has few individual units — The metric system has only about 30 individual units, and many of these are relevant only in specialized fields. The most common units, such as the meter, gram and liter, are easy to learn and understand. Scientists who work in different countries need a standardized system that allows them to compare notes and understand one another.
Without a standard, they would waste time converting measurements from one system of measurement to another, and accuracy would suffer. SI is the preferred system because, among other reasons, it isn't based on the body parts of people who lived centuries ago. It's an elegant and simple system based on a universal standard that can be verified by anyone. Chris Deziel holds a Bachelor's degree in physics and a Master's degree in Humanities, He has taught science, math and English at the university level, both in his native Canada and in Japan.
He began writing online in , offering information in scientific, cultural and practical topics. In scientific notation , can be written as 1 times 2 multiples of Scientific notation is a simple way to represent large numbers because the 10's exponent 2 in the example above tells you how many places to move the decimal of the coefficient 1 in the example above to obtain the original number.
In our example, the exponent 2 tells us to move the decimal to the right two places to generate the original number:. Scientific notation can be used even when the coefficient is a number other than 1. For example:. This shorthand can also be used with very small numbers. When scientific notation is used with numbers less than one, the exponent on the 10 is negative, and the decimal is moved to the left, rather than the right.
Therefore, using scientific notation , the diameter of a red blood cell is 6. Also note that in scientific notation , the base numeral is always represented as a single digit followed by decimals if necessary. Therefore, the number 0. The metric system is the standard system of measurement in science.
This module describes the history and basic operation of the metric system, as well as scientific notation. The module explains how the simplicity of the metric system stems from having only one base unit for each type of quantity measured length, volume, and mass along with a range of prefixes that indicate multiples of ten.
The metric system is the primary system of measurement used through much of the world and in science. Scientists use metric system because if they want to repeat the work of others, it would be easier to do so because all scientists use the metric system.
Scientist also use the metric system to perform experiments and to collect data. Although U. The metric system is the preferred system of scientific units for several reasons: The majority of countries in the world employ the metric system of measurement.
Because metric units are decimal-based, they are easily converted by moving the decimal point. Why US should not use metric system? The biggest reasons the U. When the Industrial Revolution began in the country, expensive manufacturing plants became a main source of American jobs and consumer products. Why does US use imperial? Why the US uses the imperial system. Because of the British, of course. When the British Empire colonized North America hundreds of years ago, it brought with it the British Imperial System, which was itself a tangled mess of sub-standardized medieval weights and measurements.
Why is it important to use the metric system?
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