Physics
Motion, forces, energy, electricity and waves. Written for Year 10 to 12 students and anyone preparing for a physics entrance exam.
Start Chapter 1 →
0 of 21 chapters done
Pick your year on any chapter.
Unit 1 Working Scientifically
Unit 2 Kinematics
- 2Time, Distance and SpeedHow fast is fast? Measuring motion with distance, time and speed, and changing units.
- 3Vectors and ScalarsSome quantities only need a size. Others need a size and a direction. Here is how to tell them apart and add them.
- 4AccelerationSpeeding up, slowing down and turning. How quickly velocity changes, and the equations of motion.
- 5Motion GraphsReading distance-time, speed-time and acceleration-time graphs. Gradients and areas tell the whole story.
Unit 3 Forces
- 6Types of Forces and Net ForcePushes and pulls, contact and non-contact forces, free body diagrams, and how forces add up.
- 7Newton's Laws of MotionThree simple rules that explain why things move the way they do, from shopping trolleys to rockets.
- 8GravityWhy things fall, the difference between mass and weight, and what keeps the Moon in orbit.
- 9MagnetismPoles, magnetic fields, Earth's own magnet, electromagnets and the motor effect.
- 10Electric Charge and Static ElectricityWhere electricity comes from. Charges, the electrostatic force, static shocks and lightning.
Unit 4 Energy
- 11Forms of EnergyEnergy comes in many forms and changes from one to another, but the total never changes.
- 12Kinetic and Potential EnergyCalculating the energy of moving and raised objects, and swapping between the two.
- 13Energy EfficiencyHow much of the energy we put in actually does the job we want? Calculating and improving efficiency.
- 14Heat Energy: Conduction, Convection and RadiationThe three ways heat moves, why metal feels cold, why hot air rises and how the Sun warms us across empty space.
Unit 5 Electrical Circuits
- 15Current, Voltage, Resistance and Ohm's LawThe three key quantities in every circuit and the simple law that links them.
- 16Drawing Electrical CircuitsThe standard symbols and rules for drawing circuit diagrams that anyone in the world can read.
- 17Series and Parallel CircuitsTwo ways to connect components, and the rules for current, voltage and resistance in each.
Unit 6 Waves
- 18Wave PropertiesWhat waves are, the two main types, and how to measure wavelength, frequency, amplitude and speed.
- 19Reflection and RefractionWhy mirrors work, why a straw looks bent in water, and how light changes direction at a boundary.
- 20Light: Brightness and ColourWhat makes light bright or dim, where colours come from, and why a red shirt looks red.
- 21The Electromagnetic SpectrumRadio, microwaves, infrared, visible light, ultraviolet, X-rays and gamma rays. One family of waves with very different jobs.