a group of standard units and their combinations
SYSTEM OF UNITS
Based on atomic standards and its modernized version is called SI system, from the French Systeme International d’ Unites (International System of Units)
Metric System
2 Variations of Metric System
meter-kilogram-second
centimeter - gram - second
length
meter
mass
kilogram
time
second
electrical current
ampere
temperature
Kelvin
amount of substance
mole
luminous intensity
candela
yotta (Y)
10^24
zeta (Z)
10^21
exa (E)
10^18
peta (P)
10^15
tera (T)
10^12
giga (G)
10^9
mega (M)
10^6
kilo (k)
10^3
hecto (h)
10^2
deka (da)
10
deci (d)
10^(-1)
centi (c)
10^(-2)
milli (m)
10^(-3)
micro
10^(-6)