Sometimes called prefix multipliers, these prefixes are also used in electronics and physics. Whether these will catch on remains to be seen, but at least if you see such an unusual prefix you might want to be aware of this. Kilo, mega, giga, tera, peta, exa, zetta and all that: Kilo, mega, giga, tera, peta, exa, zetta are among the list of prefixes used to denote the quantity of something, such as a byte or bit in computing and telecommunications. This new system of binary prefixes has been endorsed by the International Electrotechnical Commission (IEC) for use in electrical technology. (Sounds like something you would feed the dog.) By this new system, 1024 bytes would be properly called a kibibyte or KiB. So, a new set of "binary prefixes", distinguished by "bi" in the name or "i" in the abbreviation, was introduced in 1998. But they are different numbers and sometimes it does matter. Now, in common usage it often does not matter whether the intent was 1000 bytes or 1024 bytes. That is 2 10 - a power of two very close to 1000. But in the computer world it often means 1024 bytes. What does it mean? It might seem to mean 1000 bytes, since kilo means 1000. You have probably heard words such as kilobyte, in the context of computers. "A picture is worth about 1.7 zmol of words." Radius of a chlorine atom in Cl 2 ~ 0.1 nm or 100 pmīond energy for one C=C double bond ~ 1 aJ World energy production per year, ~ 0.4 ZJġ light-year (distance light travels in one year) ~ 9.5 Pmġ light-second (distance light travels in one second) ~ 0.3 Gm prefixĪbbreviation (upper and lower case are important)Ī sense of scale (for some) Most are approximate.Įnergy given off by the sun in 1 second ~ 400 YJ To help you visualize the effect of these prefixes, there is a column "a sense of scale", which gives some examples of the magnitudes represented. In particular, the smaller prefixes such as nano, pico, femto, etc., are becoming increasingly common as analytical chemistry and biotechnology develop more sensitive methods. Conversions between measuring units are studied all through elementary school. You can also customize them using the generator below. The worksheets can be made in html or PDF format both are easy to print. You will find prefixes from throughout the range as you read the scientific literature. Our power prefixes table lists the metric symbol and multiplication factor for the prefixes quecto, ronto, yocto, zepto, atto, femto, pico, nano, micro, milli, centi. Create an unlimited supply of worksheets for conversion of metric measuring units for grades 2-7. There is no point of memorizing this, but it is nice to have a place to look them up. Our various textbooks and lab manuals contain longer lists of prefixes, but few if any contain a complete list. I use the method in which students count the number of jumps between prefixes, and then move the decimal point accordingly. In introductory chemistry we use only a few of the most common metric prefixes, such as milli, centi, and kilo. Conversions are taught using kilo-, hecto-, deka-, unit, deci-, centi-, milli- only. Take a look at the most commonly used metric prefixes for length, mass, volume, and time.\) Metric system prefixes provide a simple way to understand exactly what each unit of measurement stands for in the metric system, since the prefixes tell you how much bigger a unit is than the base unit. Below is a table of the most commonly used metric prefixes that can be added to the basic units of measurement. But adding milli- to “meter” creates “millimeter,” which means one thousandth of a meter. For example, adding kilo- to the unit “meter” makes “kilometer,” or one thousand meters. Prefixes are added as place values are added. Basic metric units and what they measure include: Metric system prefixes come before a basic unit of measure to indicate a multiple (or submultiple) of that unit.
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