P1
energy stores
energy stores can change when energy is transfured eg heating or by doing an action.
Kinetic energy
when something moves it previous energy store transfures to kinetic energy
equation -1/2mv^2
gravitational potential energy(GPE)
when objects are raised its previous energy store is transfured into GPE
mass x gravitational field x height
specific heat capacity
The energy needed to change 1kg object by 1 degree
equation- mass x specific heat x change in tempeture
effecency
this is the amount of energy which is transfured into useful energy for example electrical heat is imputed into a oven and heat is the useful energy.
useful output /total input
energy stores
non renewable energy- is energy that can't be created or destroyed , as well they usually effect the environments well they will run out over recurrently people still depend on fossil fules .
eg.coal,gas oil
Non renawable energy is energy that won't run out overtime or can be restored, they are also less damageing than non rewable energy.
eg. the sun, wind ,bio-fuel
wind power
wind power is used to generate electricity however this is very noise and also can block views as a result people don't like them.
solar power
solar power also generates electricity, this doesn't take up much room however they can be expensive and only work when it is sunny
Geo thermal power
this is used to generate electricity however it can oly be used where there is vocanios however it is very effective and reliable
Hydro electric power
this is used at falling water, people don't like it because it looks bad as well it destroys the eviroment due to damms haveing to be form drowning large areas
wave power
this has little down sides however it is expencive and is hazardess to boat drivers
Tidal power
this is reliable due to moon and sun is a constant. howner is expencive and is a hazard to boats.