Key term
AQA GCSE Combined Science Physics 8464
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 contamination
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 Grid
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 springDistance, 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
Waves
Transverse and longitudinal waves, and the wave equation
- 3 things to know
- Physics Paper 2
Overview
The two wave types and how their oscillations differ, compressions and rarefactions, why the medium is not carried along, the wave equation v = f λ, and measuring the speed of sound and of ripples.
What you need to know
Answer each one before you reveal it.
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Key term
What are the two types that all waves can be classified as?
Key term
Give an example of a transverse wave that can be seen on water.
Questions from this subtopic
Each one with the model answer underneath.
- 1
What are the two types that all waves can be classified as?
Model answer
Transverse and longitudinal.
- 2
In which type of wave do the oscillations happen at right angles to the direction the wave travels?
Model answer
In a transverse wave.
- 3
Give an example of a transverse wave that can be seen on water.
Model answer
Ripples on a water surface.
- 4
In which direction does the water move as a ripple travels across the surface of a pond?
Model answer
Up and down, at right angles to the direction in which the ripple travels.
- 5
What name is given to the regions of a longitudinal wave where the particles are squashed close together?
Model answer
Compressions.
- 6
What name is given to the regions of a longitudinal wave where the particles are spread furthest apart?
Model answer
Rarefactions.
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