Key term
AQA GCSE Physics 8463
Atomic Structure
Topic overviewThe structure of an atomMass number, atomic number and isotopesFrom the plum pudding model to the nuclear modelChadwick, the neutron, and comparing the modelsRadioactive decay and nuclear radiationNuclear equationsHalf-lives and the random nature of radioactive decayRadioactive contaminationBackground radiationUses of nuclear radiation, and how half-life affects hazardNuclear fission and nuclear fusion
Electricity
Topic overviewCircuit symbols, electrical charge and currentCurrent, resistance and potential differenceOhmic conductors, filament lamps, diodes and thermistorsLight-dependent resistors, and investigating resistanceCurrent and potential difference in series and parallelConstructing circuits, and calculating in series circuitsDirect and alternating potential difference, and mains electricityPower and efficiencyAppliances, and the energy transferred by electrical workPower, and the power ratings of domestic appliancesThe National GridStatic chargeElectric fields
Energy
Forces
Topic overviewScalars, vectors, forces and the resultant forceGravityWork done and energy transferStretching, compressing, and the spring constantLinear and non-linear extension, and work done on a springMoments, levers and gearsPressure at a surface, and the equation p = F over AAtmospheric pressureDistance, displacement and speedThe speed of sound, and the distance-speed-time equationVelocity and the distance-time relationshipAcceleration, deceleration and velocity-time graphsArea under a velocity-time graph, and the uniform acceleration equationNewton's First LawNewton's Second and Third LawsStopping distance and reaction timeFactors affecting braking distanceBraking force, deceleration and the dangers of stopping quickly
Magnetism and Electromagnetism
Particle Model of Matter
Space Physics
Waves
Topic overviewTransverse and longitudinal waves, and the wave equationWave properties, and refraction at a boundaryReflection of wavesTypes and uses of electromagnetic wavesRadio waves, and the hazards of ultraviolet, X-rays and gamma raysLensesVisible lightEmission and absorption of infrared radiation, and black bodies
Space Physics
Our solar system, and the orbits of satellites
- 3 things to know
- Paper 2
Overview
The Sun, planets, dwarf planets and moons of our solar system and its place in the galaxy, how the Sun formed from a nebula, why fusion begins and what balances a stable star, gravity keeping planets, moons and artificial satellites in circular orbits, and how moons and artificial satellites are alike and differ.
What you need to know
Answer each one before you reveal it.
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Key term
Which star lies at the centre of our solar system, and how many stars does the solar system contain?
Key term
Apart from the Sun, which two kinds of body orbit the Sun directly?
Questions from this subtopic
Each one with the model answer underneath.
- 1
Which star lies at the centre of our solar system, and how many stars does the solar system contain?
Model answer
The Sun, and it is the only star in the solar system.
- 2
Apart from the Sun, which two kinds of body orbit the Sun directly?
Model answer
The eight planets and the dwarf planets.
- 3
The moons that orbit planets are examples of what, and are they part of the solar system?
Model answer
They are natural satellites, and they are part of the solar system.
- 4
Which galaxy is our solar system part of?
Model answer
The Milky Way galaxy.
- 5
How big is our solar system compared with the galaxy it belongs to?
Model answer
It is only a small part of that galaxy.
- 6
What is a nebula?
Model answer
A cloud of dust and gas in space.
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