Units of Units of measurementmeasurement

By Paula Bueno and Mauricio By Paula Bueno and Mauricio BerrocalBerrocal

ExaExa

Exa ( E) is a prefix of the Internacional System of Units that shows a factor of 1018 Adopted in 1975, originates from greek and means six is

equivalent to 10006.

PetaPeta

PetaPeta ( (PP) is a prefix of the International ) is a prefix of the International System of Units that shows a factor of System of Units that shows a factor of 1015, equivalent to 1 000 000 000 000 0001015, equivalent to 1 000 000 000 000 000

TeraTera

Tera (T) is a prefix of the International Sistem of Units that indicates a factor of 1012, o 1 000 000 000 000

An example of an object that is measured in the Tera unit, is the hard drive.

GigaGigaGiga (G) is a prefix of the Interntion System of Units that indicates a factor of

1 000 000 000.Originates from Greek and means giant the SI base unit of length, hence

to 1,000,000 km or approximately 621,370 miles

MegaMega The mega is equal to one million metres, The mega is equal to one million metres,

the SI base unitof length, hence to the SI base unitof length, hence to 1,000 km or approximately 621.37 miles. 1,000 km or approximately 621.37 miles. Mega comes from the Greek that means Mega comes from the Greek that means

great.great.

KiloKilo The kilometre  (km) is equal to one The kilometre  (km) is equal to one

thousand metres. The prefix kilo is derived thousand metres. The prefix kilo is derived from the Greek and it means thousand. from the Greek and it means thousand.

MicroMicro - The micrometre   The symbol µm is - The micrometre   The symbol µm is

sometimes rendered as um if the symbol sometimes rendered as um if the symbol µµ cannot be used, or if the writer is not aware cannot be used, or if the writer is not aware of the distinction.The prefix micro is aquired of the distinction.The prefix micro is aquired

from the Greekfrom the Greek and it means small.

NanoNano Nano (n) is an SI prefix meaning one Nano (n) is an SI prefix meaning one billionth. This prefix is obtained from the billionth. This prefix is obtained from the

Greek and it means dwarf.Greek and it means dwarf.

PicoPico Pico (P) is a prefix of the International Pico (P) is a prefix of the International

System of Units that is denoting one System of Units that is denoting one trillionth, a factor of 10−12. It is derived trillionth, a factor of 10−12. It is derived

from the Spanish pico, meaning bit. from the Spanish pico, meaning bit.

AttoAtto Atto (a) is a prefix of the metric system Atto (a) is a prefix of the metric system

denoting a factor of 10−18 or denoting a factor of 10−18 or 0.000000000000000001.The prefix atto is 0.000000000000000001.The prefix atto is derived from the Denish word eighteen.derived from the Denish word eighteen.

FemtoFemto Femto (f) is a prefix in the metric system Femto (f) is a prefix in the metric system

denoting a factor of 10−15 or denoting a factor of 10−15 or 0.000000000000001. It is derived from the 0.000000000000001. It is derived from the

Danish word meaning fifteen.Danish word meaning fifteen.

YottaYotta Yotta (Y) is the largest unit prefix in the Yotta (Y) is the largest unit prefix in the

International System of Units (SI), International System of Units (SI), denoting a factor of 1024 or denoting a factor of 1024 or

1000000000000000000000000. The 1000000000000000000000000. The prefix name is derived from the Greekprefix name is derived from the Greek