2.1 Quantities and Units Flashcards
Name the 7 SI base quantities and units
I Am Much Taller Than Leprechauns
Length, mass, time, electric currents, temperature, amount of a substance ( mole )
And also light intensity ( not assessed )
A homogeneous formula means that…
The units on the left hand side of the formula are equal to the right hand side of the formula
The prefix in front of a unit tells you…
The factor of ten by which the unit is multiplied
Name and factor of SI prefix ‘T’
Tera, 10^12
Name and factor of SI prefix ‘G’
Giga, 10^9
Name and factor of SI prefix ‘M’
Mega, 10^6
Name and factor of SI prefix ‘K’
Kilo, 10^3
Name and factor of SI prefix ‘c’
Centi, 10^-2
Name and factor of SI prefix ‘m’
Milli, 10^-3
Name and factor of SI prefix ‘u’
Micro, 10^-6
Name and factor of SI prefix ‘n’
Nano, 10^-9
Name and factor of SI prefix ‘p’
Pico, 10^-12
Name and factor of SI prefix ‘f’
Femto, 10^-15
How should a quantity be written in a column heading/axis title/graph
They should be separated by a forward slash
Any prefix or power of ten should go after the forward slash an before the unit
Define SI units
International standard of units for physical quantities and units
