Physics revision notes

Ten topics, one section per Physiworld lesson. Each section says what you need to know, the key terms, the equations with their units, one worked example, the common mistakes and one exam tip, and which courses list it. The notes are free; each section ends with the lesson's quiz and the topic's exam questions.

Dynamics Forces, motion and momentum · 10 sections Describing Motion · Forces & Motion · Momentum & Collisions · Work, Energy & Power · Newton's Laws in Practice · Forces as Vectors · Springs & Stretching · Turning Forces · Circular Motion · Rotation Gravity Weight, free fall and orbits · 8 sections Why Things Fall & Orbit · Weight, Scales and Weightlessness · Newton's Law of Gravitation · Earth, Moon and the Solar System · Kepler's Laws · Satellites · Gravitational Energy · Tides, Roche & Black Holes Fluid Mechanics Density and pressure · 8 sections What Is a Fluid? · Buoyancy & Archimedes · Pressure & Pascal's Principle · The Air on Top · Upthrust and Newton's Laws · Bernoulli & Flow · Bernoulli in Full · The Full Picture Measurements & Units Units, prefixes and errors · 5 sections Foundations · Numbers in Physics · Measurement & Error · Planning an Investigation · Tables & Graphs Vibrations & Waves Wave motion and sound · 10 sections Waves · When Waves Meet · Wave Speed & The Medium · Frequency, Wavelength & Human Hearing · Waves Meet Matter · Standing Waves & Resonance · Simple Harmonic Motion · Wave Phenomena Sandbox · Using the EM Spectrum · Signals Thermodynamics Heat, energy and transfer · 9 sections Heat & Temperature · Expansion & Changes of State · Conduction, Convection & Radiation · Radiation Balance · The Laws of Thermodynamics · Latent Heat & Phase Changes · Gas Particles & Pressure · Heat Engines & Thermodynamics · Energy Resources Electromagnetism Charge, current and circuits · 11 sections Electric Charge · Conductors & Insulators · Current, Voltage & Ohm's Law · Magnets & Electromagnets · Electric & Magnetic Fields · Motors & Loudspeakers · Induction, Generators & Microphones · Electric Circuits · Circuit Components & Sensors · Electricity at Home · The National Grid Optics Light, lenses and refraction · 7 sections The Bending of Light · The Law of Reflection · Snell's Law · Lenses · The Lens Equation · Concave Lenses and Light as a Wave · The Full Picture of Light Nuclear Physics Atoms, decay and radiation · 8 sections Fission & the Nucleus · Bohr's Atom and the Neutron · Radioactive Decay · Why Nuclei Decay · Nuclear Energy · Weapons, Shielding & Consequences · Radiation at Work · Radiation in Medicine & the Nuclear Choice Astrophysics Stars, galaxies and cosmology · 8 sections Gravity Across the Universe · How We Read the Sky · The Lives of Stars · Dark Matter · Black Holes · Schwarzschild Radius · The Universe · Big Bang or Steady State?

Need the equations on one page? Use the IGCSE, GCSE, AP Physics 1 or NGSS formula sheet.

Learn these with interactive lessons →

Free account · no card · every lesson interactive

Physiworld is an independent study resource and is not affiliated with, endorsed by, or involved with Cambridge Assessment, AQA, Pearson Edexcel, OCR or the College Board. AP® is a trademark of the College Board. NGSS is a registered trademark of Achieve, Inc., which was not involved in the production of, and does not endorse, this product.