Edexcel ·Combined Science·Cambridge IGCSE Combined Science

Pressure & Thermal Physics

13 min read

Pressure in solids, liquids and gases, density, the particle model of states, and thermal expansion and energy transfer.

Pressure

Pressure is force per unit area:

$P = \frac{F}{A}$

measured in pascals (Pa), where 1 Pa = 1 N/m². A small area gives a large pressure (e.g. a sharp knife).

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Edexcel ·Combined Science·Cambridge IGCSE Combined Science

13 min read

Pressure in solids, liquids and gases, density, the particle model of states, and thermal expansion and energy transfer.

Pressure is force per unit area:

$P = \frac{F}{A}$

measured in pascals (Pa), where 1 Pa = 1 N/m². A small area gives a large pressure (e.g. a sharp knife).

Create a free account to read this note in full. Every free account gets 2 complete revision notes — no card needed.