Physics: every topic explained
30 short explanations for Physics, one per syllabus topic: the idea, the rules, the common mistake and a worked example. Each one links to our notes and a free test on that topic.
Energy
- Energy stores, energy changes and specific heat capacity
- Power, conservation and dissipation of energy, and efficiency
- National and global energy resources
Electricity
- Current, potential difference, resistance and I–V characteristics
- Series and parallel circuits
- Mains electricity, power and the National Grid
- Static electricity and electric fields
Particle model of matter
- Density and changes of state
- Internal energy, specific heat capacity and specific latent heat
- Particle model and pressure in gases
Atomic structure
- Atoms, isotopes and the atomic model
- Radioactive decay, half-life and contamination
- Background radiation, uses, fission and fusion
Forces
- Scalars, vectors, weight and resultant forces
- Work done and elasticity
- Moments, levers and gears
- Pressure in fluids and the atmosphere
- Describing motion and motion graphs
- Newton's laws and stopping distances
- Momentum
Waves
- Transverse and longitudinal waves and wave properties
- Reflection, sound and waves for detection and exploration
- Electromagnetic waves: properties, uses and hazards
- Lenses and visible light
- Black body radiation
Magnetism and electromagnetism
- Magnets, magnetic fields and electromagnets
- The motor effect, electric motors and loudspeakers
- Induced potential, generators, microphones and transformers
Space physics
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