Energy Flashcards
Energy unit
Joules (J)
Energy stores
Nuclear,
Chemical,
Magnetic,
Gravitational potential,
Kinetic,
Thermal,
Electrostatic,
Elastic potential
Energy transfers
Mechanically,
Electrically,
Heating,
Radiation
Work done equation
Wd= f x d
Mechanical transfer
Machine, work, transfer
Electrically transfer eg
Current in a wire
Heating transfer eg
Anything hot
Radiation eg
Light and sound
Principle of conservation of energy
Energy can be stored or transferred- but can never be created or destroyed
Work done unit
Joules
Efficiency equation
Useful energy out/ total energy in X 100
If work is done…
Energy is transferred
Work done is equal to…
The amount of energy that is transferred mechanically
Gravitational potential energy (GPE) equation
GPE = mgh
Gravitational field strength on earth
10 N/kg
