ENERGY
physics
CONSERVATION OF ENERGY:
ENERGY STORES energy can neither be created nor be destroyed
but it can be usefully transferred and wasted.
Chemical
Elastic
ENERGY TRANSFER
Gravitational Potential
Example: swinging pendulum – this shows how the
Nuclear energy is transferred between energy stores
Kinetic
Magnetic
Thermal
Electrostatic
maximum
gravitational maximum
potential gravitational
ENERGY TRANSFER energy potential
Heating energy
maximum
Electrical work kinetic energy
Mechanical work
Radiation SANKEY DIAGRAMS
This shows how the energy in a system (object/s) is
transferred to different energy stores
Energy can be transferred gravitational kinetic energy
potential energy
usefully and wasted.
800J
1000J
To calculate the efficiency, use
the equation:
Efficiency = (useful energy
output/total energy input) x 100 wasted energy
200J
physics
CONSERVATION OF ENERGY:
ENERGY STORES energy can neither be created nor be destroyed
but it can be usefully transferred and wasted.
Chemical
Elastic
ENERGY TRANSFER
Gravitational Potential
Example: swinging pendulum – this shows how the
Nuclear energy is transferred between energy stores
Kinetic
Magnetic
Thermal
Electrostatic
maximum
gravitational maximum
potential gravitational
ENERGY TRANSFER energy potential
Heating energy
maximum
Electrical work kinetic energy
Mechanical work
Radiation SANKEY DIAGRAMS
This shows how the energy in a system (object/s) is
transferred to different energy stores
Energy can be transferred gravitational kinetic energy
potential energy
usefully and wasted.
800J
1000J
To calculate the efficiency, use
the equation:
Efficiency = (useful energy
output/total energy input) x 100 wasted energy
200J
