| Term | Definition |
|---|---|
measurement | a comparison of an unknown quantity to a know standard unit |
SI | International System of Units |
fundamental units | ampere, candela, kelvin, kilogram, meter, mole, second |
derived unit | combinations of fundamental units (e.g. square meter; area) |
peta | quadrillion; 1,000,000,000,000,000; 10(15) |
tera | trillion; 1,000,000,000,000; 10(12) |
giga | billion; 1,000,000,000; 10(9) |
mega | million; 1,000,000; 10(6) |
kilo | thousand; 1,000; 10(3) |
hecto | hundred; 100; 10(2) |
deka | ten; 10; 10(1) |
deci | tenth; 0.1; 10(-1) |
centi | hundredth; 0.01 |
milli | thousandth; 0.001 |
micro | millionth; 0.000 001 |
nano | billionth; 0.000 000 001 |
pico | trillionth; 0.000 000 000 001 |
femto | quadrillionth; 0.000 000 000 000 001 |