0.3 · Preface · Tools: SI units
The seven base units
The units that every other unit is built from.
SL+HLEasier10 minFree
Hook
Thousands of units exist. Which few are truly fundamental?
Unit → quantity
1 / 3
Check 1 of 3
The SI base unit of temperature is…
Check 2 of 3
Which is NOT a base unit?
Check 3 of 3
How many SI base units are there?
Remember earlier lessons
From lesson 0.2
A physical quantity always needs…
From lesson 0.1
Volume is measured in…
Summary card
Key points
- • Seven SI base units.
- • All other units (J, N …) are built from them.
- • Lux and the radian are derived.
Formulas
- 1 J = 1 kg m² s⁻²
Key terms
- Base unit :
- one of the seven fundamental SI units
- Derived unit :
- made by combining base units
Common errors
- • Treating °C as the base unit of temperature.
- • Listing the joule as a base unit.
Checks solved: 0 of 3