BTECRevision

Shop

Unit 3 Physics — AAQ Applied Science Revision

FREE PHYSICS REVISION · UNIT 3

Pearson BTEC Level 3 AAQ Applied Science · Principles and Applications of Physics

Specification-mapped explanations, original diagrams, worked examples and five interactive questions per lesson.

4 of 56 lessons published · This course follows the current AAQ specification, Issue 7 (May 2026).

Choose a topic below. Attempt the questions, read the feedback and retry anything you find difficult.

A1 · Waves

  1. A1.1.1 · Wave quantities and oscillations
  2. A1.1.2 · Reading wave graphs
  3. A1.2 · Transverse and longitudinal waves
  4. A1.3 · Phase, coherence and superposition
  5. A1.3.1 · Atomic transitions and light emissionPublication in progress
  6. A1.3.2 · Diffraction gratings and line spectraPublication in progress
  7. A1.3.3 · Identifying gases from emission linesPublication in progress
  8. A1.4 · Calculating wave speed, frequency and wavelengthPublication in progress
  9. A1.5 · Stationary waves, resonance and instrumentsPublication in progress
  10. A1.5.2 · Wave speed on a stretched stringPublication in progress

A2 · Optical fibres

  1. A2.1 · Refraction and refractive indexPublication in progress
  2. A2.1.2 · Conditions for total internal reflectionPublication in progress
  3. A2.1.3 · Calculating critical anglesPublication in progress
  4. A2.1.4 · Core, cladding and optical-fibre guidancePublication in progress
  5. A2.2 · Optical fibres in communication, engineering and medicinePublication in progress
  6. A2.3 · Analogue and digital signalsPublication in progress

A3 · Electromagnetic communication

  1. A3.1 · Electromagnetic wave speedPublication in progress
  2. A3.2 · Inverse-square intensityPublication in progress
  3. A3.3 · The electromagnetic spectrum and communicationPublication in progress

B1 · Motion

  1. B1.1 · Motion quantities, SI units and conversionsPublication in progress
  2. B1.2 · Speed and average speedPublication in progress
  3. B1.3 · Scalars, vectors and one-dimensional motionPublication in progress
  4. B1.3.3 · Displacement–time graphs and velocityPublication in progress
  5. B1.3.4 · Velocity–time graphs and travelled distancePublication in progress
  6. B1.3.6 · Acceleration from velocity–time gradientsPublication in progress
  7. B1.3.7 · Measuring trolley accelerationPublication in progress
  8. B1.3.8 · Constant-acceleration motion equationsPublication in progress
  9. B1.4 · Accelerometers and motion sensingPublication in progress

B2 · Forces

  1. B2.1 · Newton’s first law and resultant forcePublication in progress
  2. B2.2 · Inertia, mass, weight and gravitational field strengthPublication in progress
  3. B2.3.1 · Static friction and its limiting coefficientPublication in progress
  4. B2.3.2 · Kinetic friction and constant-speed testsPublication in progress
  5. B2.4 · Momentum and its directionPublication in progress
  6. B2.5 · Newton’s second law and momentum changePublication in progress
  7. B2.5.2 · Speed, mass and transport consequencesPublication in progress
  8. B2.5.3 · Impact protection: restraints and vehicle structuresPublication in progress
  9. B2.6 · Newton’s third law and interaction pairsPublication in progress
  10. B2.7 · Balanced forces, drag and terminal velocityPublication in progress

C1 · Circuit components

  1. C1.1 · Recognising and drawing circuit symbolsPublication in progress
  2. C1.2 · Current, potential difference, energy and powerPublication in progress
  3. C1.3 · Building circuits and using electrical metersPublication in progress
  4. C1.4 · Lamps, diodes, thermistors and light sensorsPublication in progress

C2 · Electrical calculations

  1. C2.1.1 · Electrical power: P = IVPublication in progress
  2. C2.1.2 · Potential difference, current and resistancePublication in progress
  3. C2.1.3 · Power as energy transferred per timePublication in progress
  4. C2.1.4 · Electrical energy: E = VItPublication in progress

C3 · Energy usage

  1. C3.1 · Domestic appliances and energy usagePublication in progress
  2. C3.2 · Operating current and fuse selectionPublication in progress
  3. C3.3 · Kilowatt-hours, energy conversion and costsPublication in progress

C4 · Thermal energy

  1. C4.1 · Joules, kilojoules and megajoulesPublication in progress
  2. C4.2 · Celsius and kelvin temperaturesPublication in progress
  3. C4.3 · Energy transfer, temperature and phase changesPublication in progress
  4. C4.4.1 · Measuring specific heat capacityPublication in progress
  5. C4.4.2 · Specific heat capacity calculations and unitsPublication in progress

C5 · Changes of state

  1. C5.1 · Measuring specific latent heatPublication in progress
  2. C5.2 · Latent heat and multi-stage thermal calculationsPublication in progress

Independent revision resource. Not affiliated with or endorsed by Pearson.