O Level Physics 5054 lectures
56 short lectures, one for each part of the syllabus, in the order it is taught. Each one teaches a topic on the board in a few minutes. The teaching part is free to watch; a free account opens the rest of every lecture: worked examples, practice questions and real past-paper questions answered.
Chapter 1.1 Physical quantities
Chapter 1.2 Motion
- Speed, average speed and accelerationA sprinter explodes off the blocks, and a train glides into a station.6 min
- Distance–time graphs and drawing motion graphsA graph can tell the story of a whole journey.5 min
- Speed–time graphs: gradient and areaOn a speed–time graph, the side shows speed, not distance.5 min
Chapter 1.3 Mass, weight and density
Chapter 1.5 Forces
- Balanced forces and F = maPush a ball on the ground and it rolls, then stops.6 min
- Newton's third lawStand on a skateboard and push against a wall.5 min
- Friction, drag and terminal velocityA cyclist stops pedalling and the bike slowly stops.5 min
- Thinking, braking and stopping distanceA child runs into the road.6 min
- Circular motionSpin a ball round on a string.5 min
- Springs: load–extension graphsHang a mass on a spring, and it stretches.5 min
- Moments, balance and stabilityA tight nut is hard to turn with a short spanner, and easy with a long one.5 min
Chapter 1.6 Momentum
Chapter 1.7 Energy, work and power
- Energy stores, conservation and work doneA cyclist freewheels down a hill and then brakes to a stop.5 min
- Gravitational potential and kinetic energyA diver stands on a ten metre board.6 min
- Power and efficiencyTwo students carry the same books up the same stairs.6 min
- Energy resourcesSwitch on a light.7 min
Chapter 1.8 Pressure
Chapter 2.1 Kinetic particle model of matter
Chapter 2.2 Thermal properties and temperature
Chapter 2.3 Transfer of thermal energy
Chapter 3.1 General properties of waves
Chapter 3.2 Light
- Reflection by a plane mirrorStand in front of a mirror, and you see yourself, apparently standing behind the glass.7 min
- Refraction and refractive indexPut a straw in a glass of water, and it looks broken at the surface.5 min
- Critical angle and total internal reflectionA glass prism can act like a perfect mirror.5 min
- Thin lenses, ray diagrams and magnificationA magnifying glass makes a tiny insect look huge.6 min
- Uses of lenses and correcting sightAbout half the people in a classroom wear glasses or contact lenses.5 min
Chapter 3.3 Electromagnetic spectrum
Chapter 3.4 Sound
Chapter 4.1 Simple magnetism and magnetic fields
Chapter 4.2 Electrical quantities
- Charge and electric fieldsRub a balloon on your hair, and it sticks to the wall.5 min
- Electric current, d.c. and a.c.A lightning strike carries about 28 000 amperes for a fraction of a second.5 min
- E.m.f., potential difference and cellsA cell is like a pump.6 min
- Resistance and Ohm's lawA kettle element glows red hot, but the cable that feeds it stays cool.5 min
Chapter 4.3 Electric circuits
Chapter 4.4 Practical electricity
Chapter 4.5 Electromagnetic effects
- The magnetic effect of a current and the motor effectIn 1820, a Danish teacher noticed that a compass needle twitched whenever a wire nearby carried a current.5 min
- The d.c. motor, relays and loudspeakersA fan, a washing machine drum, a car starter motor.5 min
- Electromagnetic induction and the a.c. generatorA bicycle dynamo lights the lamp, and there is no battery.5 min
4.5–4.6 Electromagnetic effects
Chapter 5.1 The nuclear model of the atom
Chapter 5.2 Radioactivity
- Alpha, beta and gamma radiationSome atoms have unstable nuclei.6 min
- Detecting radiation, background and uses of isotopesA Geiger counter clicks even in an empty room.6 min
- Decay equations and half-lifeArchaeologists date a wooden spear by measuring how much radioactive carbon is left in it.6 min
- Fission and fusionA nuclear power station and the Sun both release energy from the nucleus.6 min
6.1–6.2 Earth, stars and the Universe
- Gravitational fields, orbits and planetary dataAn orbiting satellite is falling all the time.6 min
- Galaxies, light-years and redshiftWhen you look at the Sun, you see it as it was eight minutes ago.5 min
- The Sun and the life cycle of a starThe iron in your blood, the calcium in your bones, the oxygen in your lungs.5 min
Also for O Level Physics 5054
Which topics come up most in O Level Physics 5054 past papers, counted from every paper since 2004.