Energy Flashcards
What are the 9 energy stores?
Kinetic energy Thermal energy electrical energy chemical energy magnetic energy nuclear energy Gravitational potential elastic potential Electrostatic energy
How is energy transferred from the kettle?
transferred from electric energy to thermal energy and is also transferred by thermal energy
Work def
Is the energy transfer that takes place when a force causes an object to move
What is the relationship between work done and energy transfer?
Same thing
Work done=
equation
Force applied*disatnce moved
Force applied* disatnce moved=
work done
Work done is measured in..
Joules(j)
Force is measured in…
newtons(n)
Distance is measured in…
metres
Triangle for work done, force, disatnce
W(at top)
F( force) D( distance
Equation for work done, power and time
W
P T
Power is measured in…
Wats
Time is measured in…
seconds
Kinetic energy increase as GPE …in a pendulum
decreases
GPE increases as kinetic energy… in a pendulum
decreases
Do appliances use all of their energy usefully?
no
dissipation
Energy transfered by appliances make the surrounding…
warmer
Gravitational potential=
equation
Massgravitational field strengthheight
How much is the gravitational strenght on Earth
10N
Would there be more GPE on you standing on the mountain or you standing on the sea level ground?
Mountains
The higher something gets the… GPE it will have
more
Massheightgravitational strength=
GPE
GPE=
Gravitational potential
What is the relationship between KE and kinetic energy?
Same
