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AQA AS and A2 Level Physics A

How Science Works

Unit 1 Particles, Quantum Phenomena and Electricity

  • Particles, antiparticles and photons
  • Particle interactions
  • Classification of particles
  • Quarks and antiquarks




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AQA AS and A2 Level Physics B: Physics in Context How Science Works
In the search for a unifying theory scientists are making new discoveries based on theoretical predictions and continue to work to confirm the discoveries of others.

Unit 1 Harmony and Structure in the Universe
Module 2 From Quarks to Quasars:
The particle picture
In this section the role of particle physics is examined. Students study theories about the range of particles that are thought to make up the universe. They will examine some theories that particle physicists believe describe the earliest moments following the big bang and the universe as we know it. They will learn about some of the questions that remain unanswered and how physicists are trying to resolve these questions with experiments using the large hadron collider.

The questions to resolve: What is mass and why are some particles so much more massive than others? (the search for the Higgs particle); Why is there a matter universe? What is dark matter? Do gravitons exist?
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OCR A2 Level Physics AH558 How Science Works

Unit G485: Fields, Particles and Frontiers of Physics
Module 3: Nuclear Physics
  • 5.3.1 The Nuclear Atom
  • 5.3.2 Fundamental Particles
Module 4: Medical imaging
  • 5.4.2 Diagnostic Methods in Medicine
Module 5: Modelling the Universe
  • 5.5.1 Structure of the Universe
  • 5.5.2 The Evolution of the Universe
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OCR A2 Level Physics B Advancing PhysicsH559

How Science Works

Unit G495: Field and Particle Pictures
Module FP 2: Fundamental Particles
FP 2.1 Probing deep into matter
The use of accelerators helps reinforce understanding of the motion of charged particles in electric and magnetic fields. Simple relativistic thinking explains the increased measured lifetimes of fast-moving decaying particles. Opportunities are provided to discuss international co-operation in large-scale experiments. Social debate about the costs and benefits of pure fundamental research can be discussed.

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edexcel A2 Level Physics How Science Works

Students explore how scientific knowledge is developed, validated and communicated by the scientific community. They consider the risks, benefits, ethical and environmental implications of science and appreciate ways in which society uses science to inform decision-making.

Unit 4 Physics on the Move
Topic 3: Particle physics
This topic covers atomic structure, particle accelerators, and the standard quark-lepton model, enabling students to describe the behaviour of matter on a subatomic scale. This topic is the subject of current research, involving the acceleration and detection of high-energy particles. It may be taught by exploring a range of experiments:
  • accelerating particles to high energies
  • detecting and interpreting interactions between particles.

Students will be assessed on their ability to:

  • explain the role of electric and magnetic fields in particle accelerators (linac and cyclotron) and detectors (general principles of ionisation and deflection only)
  • recall and use the fact that charge, energy and momentum are always conserved in interactions between particles and hence interpret records of particle tracks
  • explain why high energies are required to break particles into their constituents and to see fine structure
  • recognise and use the expression ?E = c2?m in situations involving the creation and annihilation of matter and antimatter particles
  • use the non-SI units MeV and GeV (energy) and MeV/c2, GeV/c2 (mass)
  • be aware of relativistic effects and that these need to be taken into account at speeds near that of light (use of relativistic equations not required)
  • recall that in the standard quark-lepton model each particle has a corresponding antiparticle, that baryons (e.g. neutrons and protons) are made from three quarks, and mesons (e.g. pions) from a quark and an antiquark, and that the symmetry of the model predicted the top and bottom quark

Unit 5 Physics from Creation to Collapse
Topic 4: Astrophysics and cosmology
This topic covers the physical interpretation of astronomical observations, the formation and evolution of stars, and the history and future of the universe.

Students will be assessed on their ability to:

  • be aware of the controversy over the age and ultimate fate of the Universe associated with the value of the Hubble Constant and the possible existence of dark matter
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