Chemical energy: energy stored in fuel (including food), released when chemical reaction takes place.
Kinetic energy: the energy of a moving object.
Gravitational potential energy: the energy of an object due to its position.
Elastic potential energy: the energy stored in a springy object when you stretch or squash it.
Electrical energy: energy transferred by an electric current.
A torch's energy transfers...
chemical energy (battery) --> electrical energy --> light energy + energy heating surroundings
Conservation of energy...
ENERGY CANNOT BE CREATED OR DESTROYED.
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