Contents

Motion, forces and energy

Thermal physics

Waves

Electricity and magnetism

Magnets and magnetic fields
Static electricity and electric fieldsBeing prepared
Current and circuit diagramsBeing prepared
Voltage and resistanceBeing prepared
Series and parallel circuitsBeing prepared
Sensors and potential dividersBeing prepared
Electricity at homeBeing prepared
ElectromagnetsBeing prepared
The motor effectBeing prepared
Generators and inductionBeing prepared
Transformers and the gridBeing prepared

Nuclear physics

Inside the nucleusBeing prepared
Ionising radiation and safetyBeing prepared
Radioactive decay and half-lifeBeing prepared

Space physics

Earth, Sun and MoonBeing prepared
The Solar System and orbitsBeing prepared
Stars and their life cycleBeing prepared
The expanding UniverseBeing prepared

Part 1 of 2

Page 01

Force and area

define

Try it yourself

Which of these is the definition of pressure?

define: give the precise meaning.

Choose one answera.force per unit volumeb.mass per unit areac.force per unit aread.force × area

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Scope and sources

Cambridge IGCSE Physics 0625 · 2026–2028 v2 · Original learning materials.

Pressure as force per unit area, p = F/A (1.8.1); how pressure varies with force and area in everyday examples (1.8.2); qualitatively, how the pressure beneath the surface of a liquid changes with depth and with the density of the liquid (1.8.3); Supplement: the change in pressure beneath the surface of a liquid, ∆p = ρg∆h (1.8.4). Atmospheric pressure beyond one sentence, hydraulics, upthrust and floating are not covered; gas pressure is in Gas pressure.

Apparatus, amounts and times in the experiment are illustrative. Real practical work follows a teacher-approved safety method.

Official Cambridge syllabus