Energy- Energy Flashcards
10 stores of energy are c______, t______, k______, g____________ p_________, e_______ p_________, n______, s____, l____, e_______ and m________.
10 stores of energy are chemical, thermal, kinetic, gravitational potential, elastic potential, nuclear, sound, light, electric and magnetic.
The unit of energy is ______ (_)
The unit of energy is Joules (J)
Energy can be _________ from one form to another but can’t be _______ or _________ this is called conservation of energy.
Energy can be transferred from one form to another but can’t be created or destroyed this is called conservation of energy.
How do you calculate energy input?
Energy input= useful energy + wasted energy
______ energy is energy that is not in a useful format that is ___________.
Wasted energy is energy that is not in a useful format that is dissipating.
How do you calculate work done?
Work done = force applied x distance moved
How do you calculate efficiency?
Efficiency = useful energy transferred ÷ total energy supplied by the device
How do you calculate power?
Power = energy transferred to appliance ÷ time taken for the energy to be transferred
An energy transfer of 1 Joule per second is equal to a power of _ ____
An energy transfer of 1 Joule per second is equal to a power of 1 Watt
