Physical Quantities and Units Flashcards
1.1 Physical quantities 1.2 SI Units 1.3 The Avogadro constant (A2) 1.4 Scalars and vectors
What is the SI base unit for mass?
kilograms (kg)
What is the SI base unit for length?
metres (m)
What is the SI base unit for time?
seconds (s)
What is the SI base unit for current?
amperes (A)
What is the SI base unit for temperature?
Kelvin (K)
Which base quantity has the following SI base unit?
kilograms (kg)
mass
Which base quantity has the following SI base unit?
metres (m)
length
Which base quantity has the following SI base unit?
seconds (s)
time
Which base quantity has the following SI base unit?
amperes (A)
current
Which base quantity has the following SI base unit?
Kelvin (K)
temperature
What does it mean when an equation is said to be homogeneous?
This means that the base units on the left-hand side of the equation are the same as those on the right.
If an equation does not have the same base units on each side, it must be wrong.
Which prefix represents the following multiple?
103
kilo (k)
Which prefix represents the following multiple?
106
mega (M)
Which prefix represents the following multiple?
109
giga (G)
Which prefix represents the following multiple?
1012
tera (T)
