1.1 Physical Quantities Flashcards
1
Q
What do all physical quantities have?
A
A numerical magnitude and a unit
2
Q
Where are all non-base units derived from?
A
The base units.
3
Q
How many base units are there?
A
7
4
Q
Which system defines the base units?
A
The SI system.
5
Q
What are base units also known as?
A
SI units.
6
Q
List the 6 A-Level SI units
A
Kilogram, second, metre, ampere, kelvin, mole
7
Q
What does the ampere measure?
A
Electric current.
8
Q
What does kelvin measure?
A
The temperature.
9
Q
What does the mole measure?
A
The amount of substance.
10
Q
Define base units.
A
Base units are the units from which all other units may be derived.
