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
Electricity
Electric fields
- 3 things to know
- Paper 1
Overview
The field around a charged object and where it is strongest, how the force changes with distance, the pattern and direction of field lines, and how a strong field causes a spark.
What you need to know
Answer each one before you reveal it.
Your recallNot started
Key term
Where is the electric field around a charged object strongest?
Evaluation
What happens to the strength of an electric field as the distance from the charged object increases?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What exists in the space around a charged object?
Model answer
An electric field.
- 2
Where is the electric field around a charged object strongest?
Model answer
Closest to the charged object.
- 3
What happens to the strength of an electric field as the distance from the charged object increases?
Model answer
The field becomes weaker.
- 4
What happens to a second charged object that is placed in an electric field?
Model answer
It experiences a force.
- 5
How does the force on a charged object change as it is brought closer to another charged object?
Model answer
The force becomes stronger.
- 6
Two charged spheres are moved further apart. Describe what happens to the force between them.
Model answer
The force becomes weaker, because each sphere sits in a weaker part of the other's field.
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