Extra materials - Units

basic units and prefixes

Units for three SI base quantities

Quantity	Unit Name	Unit Symbol
Length [L]	meter	m
Time [T]	second	s
Mass [M]	kilogram	kg

Some prefixes for SI Units that you must remember!

Factor	Prefix	Symbol
\(10^9\)	giga-	G
\(10^6\)	mega-	M
\(10^3\)	kilo-	k
\(10^{-2}\)	centi-	c
\(10^{-3}\)	milli-	m
\(10^{-6}\)	micro-	\(\mu\)
\(10^{-9}\)	nano-	n

exponent rules

volume and surface area

1 horse-sized duck or 100 duck-sized horses?