AQA PHYSICS PAPER 1 MAY 2023 OFFICIAL QUESTION PAPER

Sound energy - Energy caused by an object's vibrations Thermal energy - The total energy of motion in the particles of a substance Chemical energy - A form of potential energy that is stored in chemical bonds between atoms. Nuclear energy - the potential energy stored in the nucleus of an atom Electrical energy - Energy caused by the movement of electrons. Light energy - Energy in the form of moving waves of light Kinetic energy - energy of motion Gravitational potential energy - potential energy that depends on the height of an object Elastic potential energy - the energy of stretched or compressed objects Conservation of energy - law that says energy cannot be created or destroyed, but can change forms Uses of friction – - rubbing hands for warmth - break pads on bikes Efficiency - Useful Energy Output / Total Energy Input Increase efficiency – - add lubricant - reduce friction