GCSE Physics (AQA)

346 videos | 23 hours

Energy Energy changes in a system, and the ways energy is stored before and after such changes

Types of Energy Store

6:49 Energy, Systems and How to Transfer Energy
Spec 4.1.1.1
Next Systems
  • Almost all physical processes involve a change in energy.
  • Energy changes are crucial in physics and occur in various processes.
  • Examples include a runner gaining speed, light bulbs illuminating, and cooking food.
  • Understanding energy changes involves knowing how energy is stored and transferred.
  • Types of energy stores:
  • Kinetic energy: energy held by moving objects.
  • Gravitational potential energy (GPE): energy gained by objects as they gain height.
  • Elastic potential energy: energy stored in stretched objects like elastic bands.
  • Thermal energy: energy held by heated objects, associated with temperature.
  • Electrostatic energy: energy stored in electrostatic fields, related to charged objects.
  • Magnetic energy: energy stored in magnetic fields, related to magnetic objects.
  • Chemical energy: energy stored in chemical bonds, released through reactions.
  • Nuclear energy: energy stored in the nucleus of an atom, released when split.
  • Energy can also take other forms when being transferred, such as:
  • Electric currents: transfer energy in circuits.
  • Sound waves: transfer energy as vibrations in matter.
  • Light waves: transfer energy as radiation.
  • Understanding these energy types and transfers is important for exams and general comprehension of energy processes.

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