Base unit

Definition

A fundamental SI unit from which other units can be formed.

Used by Edexcel

Specification 1.1 · Paper 1, Paper 2

The kilogram—not the gram—is the SI base unit of mass. Kelvin temperatures do not use a degree sign, so write 300 K rather than 300 °K.
Revise: SI Units

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GCSE Physics · key term

A fundamental SI unit from which other units can be formed.

Used by Edexcel

Specification 1.1 · Paper 1, Paper 2

The kilogram—not the gram—is the SI base unit of mass. Kelvin temperatures do not use a degree sign, so write 300 K rather than 300 °K.
Revise: SI Units

Create a free account to read GCSE Physics revision notes for your exam board and track your progress.