Exam Board
A–Level OCR Physics Specification A
Description
We follow the OCR Physics Specification A as it includes a high level of practical based skills, to prepare students for their next step, whether it be industry or further scientific studies. A core requirement of the course is independent work, to consolidate the concepts covered in class, and this benefits students across all their subjects. Where relevant, higher-level content is touched upon, to support students’ understanding of abstract concepts and further ignite their scientific curiosity.
Content
Module 1: Practical Skills
Module 2: Foundations of Physics:
- SI Units, base and derived units, standard form, prefixes, orders of magnitude
Module 3: Forces and Motion
- Motion – equations of motion (suvat), projectiles, vectors, resolving vectors, resultant vectors
- Forces in Action – balanced forces, equilibrium, resolving forces, resultant forces
- Work Energy & Power – work done, power, energy, calculating kinetic energy, gravitational potential energy
- Materials – stress, strain, Young's Modulus, properties of materials in terms of stress-strain, graphs, elastic limit/yield point, ultimate tensile strength, breaking stress etc.
- Laws of Motion & Momentum - Newton's Laws, changes in momentum, impulse and
- Force-Time graphs
Module 4: Electrons, Waves and Photons
- Charge and Current - calculating current, charge, drift velocity of electrons etc.
- Energy, Power & Resistance - electrical energy and power calculations, defining
- resistance, resistance, Ohm's Law, internal resistance, electromotive force (emf), terminal p.d.
- Electrical Circuits - series and parallel circuits, potential divider circuits, solving circuit problems with current. p.d, resistance, power.
- Waves - wave features, amplitude, frequency, period, wavelength. Superposition of waves, interference, Young's double slit experiment. Stationary waves with 2 fixed ends, open tube at one end and open tube at both ends.
- Quantum Physics - Photoelectric effect and equation, photons, E=hf equation. Planck's Constant. Wave-particle duality.
Module 5: Newtonian World and Astrophysics
- Thermal Physics - particle theory, kinetic theory and assumptions, Brownian motion
- Ideal Gases - key factors (P, V and T); ideal gas equation, gas laws (Charles' Law, Boyle's Law, Gay-Lusaac Law); molar gas constant.
- Circular Motion - centripetal and centrifugal forces. Calculating force, velocity, mass and radius of an object.
- Oscillations - simple harmonic motion (SHM) and equations/graphs to represent velocity, acceleration kinetic and potential energies.
- Gravity Fields - Newton's gravitational law, Kepler's Laws, Gravitational potential energy and potential. Link to circular motion (e.g. orbits) and waves (e.g. time period of orbit)
- Stars - formation of stars/planets, life cycle/evolution of stars, Hertzsprung- Russell (HR) diagram; black holes, white dwarves, neutron stars. Stellar luminosity, temperature, brightness etc. Stefan-Boltzmann Law, Wien's Law. Energy Levels in atoms to explain emission and absorption spectra (links to quantum physics).
- Cosmology - scales in the universe, distances (light years, parsecs, astronomical units); parallax method. Big Bang theory, Doppler effect and equations.
Module 6: Particles and Medical Physics
- Capacitance - structure of capacitors; charging and discharging (graphs and equations); time constant for a capacitor, uses of capacitors.
- Electric Fields - parallel plates and point charges, E-field diagrams, Coulomb's Law, equipotentials.
- Magnetic Fields - the Tesla, magnetic flux/flux density, the Motor Effect, electric motors, affect on charge particles, the velocity selector. Electromagnetic induction, generators and national grid. Faraday's Law(s) of EM induction.
- Particle Physics - subatomic particles, leptons, hadrons, baryons etc.
- Radioactivity - decay equations, half-life, properties of alpha/beta/gamma, uses and dangers of nuclear radiation, modelling radioactive decay, carbon dating.
- Nuclear Physics - strong and weak nuclear forces, binding energy and the binding energy curve; nuclear fusion and fission in relation to the curve; E = mc2 equation.
- Medical Imaging - X-rays, ultrasound scanning, PET and CT scanning, Doppler affect for blood flow, acoustic impedance, radiation in medicine.