Units & Prefixes Flashcards

All 8 cards in this deck

What does the prefix giga (G) mean?

$\times 10^9$ (1 000 000 000).
e.g. 1 GW = 1 000 000 000 W

What does the prefix mega (M) mean?

$\times 10^6$ (1 000 000).
e.g. 1 MW = 1 000 000 W

What does the prefix kilo (k) mean?

$\times 10^3$ (1000).
e.g. 1 kJ = 1000 J

What does the prefix milli (m) mean?

$\times 10^{-3}$ (one thousandth).
e.g. 1 mA = 0.001 A

What does the prefix micro ($\mu$) mean?

$\times 10^{-6}$ (one millionth).
e.g. 1 $\mu$s = 0.000 001 s

What does the prefix nano (n) mean?

$\times 10^{-9}$ (one thousand millionth).
e.g. 1 nm = 0.000 000 001 m

What does the prefix centi (c) mean?

$\times 10^{-2}$ (one hundredth).
e.g. 1 cm = 0.01 m

What are the SI base units of mass, length and time?

Mass: kilogram (kg); length: metre (m); time: second (s). The base unit of mass is the kg, not the g.