Energy and electricity
In this collection of GCSE physics revision videos, you can learn more about electricity and energy. We will explain the ways in which energy is stored as well as the differences in electric circuits and parallel circuits. We'll show you how circuits work and the earth and neutral wires. So, scroll down to start your electricity and energy physics revision.
Energy stores: Different forms in which energy is stored, including kinetic, chemical, elastic and gravitational potential energy, and how it can be transferred.
Electric circuits: The resistance of a circuit, its relationship to current and potential difference, and how to use an ammeter and voltmeter to calculate all three.
Parallel circuits: Current and potential difference, their definitions and how they are measured. The differences between series and parallel circuits.
Using energy: Heat explained as vibrations on the molecular level transferred by conduction, convection and radiation, and how these are used to heat a home.
Domestic electricity: How circuits work and safety devices around the home, including fuses, circuit breakers, the ring main circuit, live, neutral and earth wires.
Waves
What is a wave? What are its properties? Find out more in this collection of physics revision videos where you can learn about the properties of a wave, waves as a solid, and more.
Properties of waves in a fluid: Ways to find the speed of a water wave, using a ripple tank experiment to find the frequency and wavelength.
Transverse and longitudinal waves: Young surfers help demonstrate how waves travel along their path while the particles remain in their places.
Waves in a solid: How sound travels through the tightly-packed particles of a solid faster than in air, demonstrated experimentally.
Lenses: Refracting light through convex and concave lenses and explaining the different results depending on focal length.
Black-body radiation: Emission and absorption of infrared radiation change a body's temperature, while different colours absorb and emit more or fewer wavelengths.
Forces
What is a force? A force is a push or a pull that acts on an object due to the interaction with another object. Learn more about forces and Newton's Third Law in this collection of physics revision videos.
Gravity: Why objects weigh less on the moon... and astronauts can jump much higher. The difference in gravity on other planets.
Moments, levers and gears: Turning forces and how they are calculated using the position of the pivot point. How gears work on a bike.
Newton's Third Law: Equal and opposite forces demonstrated by skaters to show the relationship between mass and acceleration - the same principle that launches rockets.
Space physics
Discover more about space physics and the solar system in this GCSE physics collection. You can learn about the life of a star and the expanding universe.
Solar System: The formation of the Earth and its Moon and why the Earth's axis is tilted.
Life cycle of a star: Elements forged in the core of dying stars make up all life on Earth.
Expanding universe: Evidence for the Big Bang in the red-shift from distant galaxies.
Magnetism and electromagnetism
What is an electromagnet? And how can it be used in everyday life? Find out more about magnetism and electromagnetismin this short physics collection.
Electromagnetism: An explanation of the magnetic field produced by current in a wire, how commutators work in generators, and the electromagnetic force equation.
Power generation: How electricity from a generator is transformed so it can be fed into the national grid and used in the home. Remembering directions with Fleming's left hand rule.
Physics practicals
Learn about physics practical experiments in this collect of revision videos. Find out more about Hooke's law, Ohm's law, motion and density.
Hooke's law: The relationship between the extension of a spring and the force applied.
The principle of moments: Balancing the clockwise and anticlockwise forces on a metre ruler.
Angles of incidence and refraction: Using ray tracing to investigate how a beam of light bends through a glass block.
Ohm's law: The connection between potential difference across a conductor and the current through it.
Motion: Measuring the average speed of an object moving down runways of differing heights.