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GCSE Physics · OCR A

OCR A GCSE Physics revision

Every topic of the OCR Gateway Physics A (J249) specification in order, with notes and practice questions. Subtopics marked free have their notes and questions on this site.

Topic P1: Matter

There are 8 parts: we start with history of the atomic model and electron energy levels, and finish with upthrust, floating and sinking.

  1. P1.1History of the atomic model and electron energy levels71 questions
  2. P1.2Density and changes of stateFree 53 questions
  3. P1.3Required practical: density of regular and irregular solids and liquids64 questions
  4. P1.4Internal energy and specific heat capacity63 questions
  5. P1.5Required practical: specific heat capacity58 questions
  6. P1.6Particle motion in gases48 questions
  7. P1.7Pressure in liquids and atmospheric pressure65 questions
  8. P1.8Upthrust, floating and sinking20 questions

Topic P2: Forces

There are 17 parts: we start with speed, velocity and acceleration, and finish with moments, levers and gears.

  1. P2.1Speed, velocity and accelerationFree 67 questions
  2. P2.2Distance–time and velocity–time graphs65 questions
  3. P2.3Equations of motion: v² − u² = 2as55 questions
  4. P2.4Scalars, vectors and resultant forces70 questions
  5. P2.5Resolving forces and vector diagrams (Higher tier)57 questions
  6. P2.6Forces and motionFree 50 questions
  7. P2.7Newton's first law and inertia66 questions
  8. P2.8Newton's second law (F = ma) and inertial mass68 questions
  9. P2.9Required practical: force, mass and acceleration70 questions
  10. P2.10Newton's third law and interaction pairs63 questions
  11. P2.11Momentum and conservation of momentum60 questions
  12. P2.12Force, change in momentum and safety features62 questions
  13. P2.13Weight, mass and gravitational field strength59 questions
  14. P2.14Required practical: force and extension of a spring (Hooke's law)Free 70 questions
  15. P2.15Elastic potential energy and force–extension graphs64 questions
  16. P2.16Elasticity, moments and pressure53 questions
  17. P2.17Moments, levers and gears64 questions

Topic P3: Electricity and magnetism

There are 15 parts: we start with static charge and charging by friction, and finish with microphones.

  1. P3.1Static charge and charging by frictionFree 67 questions
  2. P3.2Electric fields and electrostatic forces73 questions
  3. P3.3Uses and dangers of static electricity62 questions
  4. P3.4Charge, potential difference and energy transferred (Q = It, E = QV)62 questions
  5. P3.5Circuits, current and resistanceFree 69 questions
  6. P3.6Required practical: resistance of a wire and of series and parallel circuits72 questions
  7. P3.7Required practical: I–V characteristics of a resistor, filament lamp and diode73 questions
  8. P3.8Thermistors, LDRs and sensing circuits58 questions
  9. P3.9Magnets and the motor effectFree 50 questions
  10. P3.10Electromagnets, solenoids and the magnetic field of a current64 questions
  11. P3.11Electric motors22 questions
  12. P3.12Loudspeakers and headphones24 questions
  13. P3.13Induction and transformers51 questions
  14. P3.14Generators: alternators, dynamos and AC/DC potential difference graphs70 questions
  15. P3.15Microphones33 questions

Topic P4: Waves and radioactivity

There are 20 parts: we start with wave properties, and finish with nuclear hazards, fission and fusion.

  1. P4.1Wave propertiesFree 44 questions
  2. P4.2Required practical: wave speed in a ripple tank and on a string67 questions
  3. P4.3Sound waves, hearing range and the speed of sound66 questions
  4. P4.4Ultrasound and echo sounding59 questions
  5. P4.5Seismic waves and the structure of the Earth70 questions
  6. P4.6Reflection of light, plane mirrors and ray diagramsFree 51 questions
  7. P4.7Refraction of light and required practical with a glass block51 questions
  8. P4.8Colour, transmission and absorption of light52 questions
  9. P4.9Convex and concave lenses33 questions
  10. P4.10Lens ray diagrams, real and virtual images and magnification31 questions
  11. P4.11The electromagnetic spectrum37 questions
  12. P4.12Radio waves, alternating current and communications63 questions
  13. P4.13Black-body radiation and infrared emission28 questions
  14. P4.14Required practical: infrared radiation emission and absorption by surfaces27 questions
  15. P4.15Atoms and radioactivityFree 74 questions
  16. P4.16Nuclear decay equations and changes in the nucleus73 questions
  17. P4.17Half-life and radioactive decay calculations75 questions
  18. P4.18Background radiation and measuring count rate30 questions
  19. P4.19Uses of radiation in medicine and industry38 questions
  20. P4.20Nuclear hazards, fission and fusion71 questions

Topic P5: Energy

There are 5 parts: we start with energy stores, transfers and efficiency, and finish with the practical on thermal insulation and rate of energy transfer.

  1. P5.1Energy stores, transfers and efficiencyFree 65 questions
  2. P5.2Kinetic and gravitational potential energy calculations70 questions
  3. P5.3Work done and power65 questions
  4. P5.4Conduction, convection and thermal insulation70 questions
  5. P5.5Required practical: thermal insulation and rate of energy transfer65 questions

Topic P6: Global challenges

There are 8 parts: we start with terminal velocity and falling objects, and finish with the Big Bang theory, expanding universe and cosmic microwave background.

  1. P6.1Terminal velocity and falling objects62 questions
  2. P6.2Stopping distances, reaction time and braking20 questions
  3. P6.3Energy resources62 questions
  4. P6.4Mains electricity and power65 questions
  5. P6.5The National Grid and electricity transmission63 questions
  6. P6.6The solar system and the life cycle of starsFree 10 questions
  7. P6.7Orbits and red-shift46 questions
  8. P6.8The Big Bang theory, expanding universe and cosmic microwave background63 questions

Topic S: Practical and maths skills

There are 5 parts: we start with physical quantities, SI units, prefixes and unit conversions, and finish with analysing and evaluating data.

  1. S.1Physical quantities, SI units, prefixes and unit conversionsFree 53 questions
  2. S.2Standard form, significant figures, estimation and rearranging equations58 questions
  3. S.3Drawing and interpreting graphs: gradients, areas and tangents60 questions
  4. S.4Planning investigations: variables, measurement, accuracy and safety77 questions
  5. S.5Analysing and evaluating data: uncertainty, anomalies and conclusions68 questions

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